Home / 309,385,685,189.32-426,952,265,247.21-172,205,558,313.64

Finding the Fourth Proportional to 309,385,685,189.32, 426,952,265,247.21 and 172,205,558,313.64

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Solution

The fourth proportional to 309,385,685,189.32, 426,952,265,247.21 and 172,205,558,313.64 is: 237,643,681,430.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,385,685,189.32 : 426,952,265,247.21 = 172,205,558,313.64 : x
  2. Step 2: Convert to fraction form
    309,385,685,189.32/426,952,265,247.21 = 172,205,558,313.64/x
  3. Step 3: Cross multiply
    309,385,685,189.32x = 426,952,265,247.21 × 172,205,558,313.64
  4. Step 4: Simplify right side
    309,385,685,189.32x = 73,523,553,210,169,120,784,384
  5. Step 5: Solve for x
    x = 73,523,553,210,169,120,784,384/309,385,685,189.32
  6. Step 6: Final answer
    x = 237,643,681,430.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.