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Finding the Fourth Proportional to 463,886.28, 640,103.31 and 272,829.96

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Solution

The fourth proportional to 463,886.28, 640,103.31 and 272,829.96 is: 376,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,886.28 : 640,103.31 = 272,829.96 : x
  2. Step 2: Convert to fraction form
    463,886.28/640,103.31 = 272,829.96/x
  3. Step 3: Cross multiply
    463,886.28x = 640,103.31 × 272,829.96
  4. Step 4: Simplify right side
    463,886.28x = 174,639,360,463.17
  5. Step 5: Solve for x
    x = 174,639,360,463.17/463,886.28
  6. Step 6: Final answer
    x = 376,470.20

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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.