Home / 309,949,743.12-427,730,607.13-170,720,504.91

Finding the Fourth Proportional to 309,949,743.12, 427,730,607.13 and 170,720,504.91

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Solution

The fourth proportional to 309,949,743.12, 427,730,607.13 and 170,720,504.91 is: 235,594,275.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,949,743.12 : 427,730,607.13 = 170,720,504.91 : x
  2. Step 2: Convert to fraction form
    309,949,743.12/427,730,607.13 = 170,720,504.91/x
  3. Step 3: Cross multiply
    309,949,743.12x = 427,730,607.13 × 170,720,504.91
  4. Step 4: Simplify right side
    309,949,743.12x = 73,022,385,211,702,192
  5. Step 5: Solve for x
    x = 73,022,385,211,702,192/309,949,743.12
  6. Step 6: Final answer
    x = 235,594,275.63

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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.