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Finding the Fourth Proportional to 423,753.16, 635,629.20 and 108,210.28

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Solution

The fourth proportional to 423,753.16, 635,629.20 and 108,210.28 is: 162,315.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,753.16 : 635,629.20 = 108,210.28 : x
  2. Step 2: Convert to fraction form
    423,753.16/635,629.20 = 108,210.28/x
  3. Step 3: Cross multiply
    423,753.16x = 635,629.20 × 108,210.28
  4. Step 4: Simplify right side
    423,753.16x = 68,781,613,708.18
  5. Step 5: Solve for x
    x = 68,781,613,708.18/423,753.16
  6. Step 6: Final answer
    x = 162,315.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.