Home / 309,385,685,188.32-426,952,265,245.83-172,205,558,312.64

Finding the Fourth Proportional to 309,385,685,188.32, 426,952,265,245.83 and 172,205,558,312.64

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Solution

The fourth proportional to 309,385,685,188.32, 426,952,265,245.83 and 172,205,558,312.64 is: 237,643,681,428.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,385,685,188.32 : 426,952,265,245.83 = 172,205,558,312.64 : x
  2. Step 2: Convert to fraction form
    309,385,685,188.32/426,952,265,245.83 = 172,205,558,312.64/x
  3. Step 3: Cross multiply
    309,385,685,188.32x = 426,952,265,245.83 × 172,205,558,312.64
  4. Step 4: Simplify right side
    309,385,685,188.32x = 73,523,553,209,504,524,926,976
  5. Step 5: Solve for x
    x = 73,523,553,209,504,524,926,976/309,385,685,188.32
  6. Step 6: Final answer
    x = 237,643,681,428.74

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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.