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Finding the Fourth Proportional to 424,256.28, 636,217.66 and 154,320.34

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Solution

The fourth proportional to 424,256.28, 636,217.66 and 154,320.34 is: 231,419.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,256.28 : 636,217.66 = 154,320.34 : x
  2. Step 2: Convert to fraction form
    424,256.28/636,217.66 = 154,320.34/x
  3. Step 3: Cross multiply
    424,256.28x = 636,217.66 × 154,320.34
  4. Step 4: Simplify right side
    424,256.28x = 98,181,322,038.32
  5. Step 5: Solve for x
    x = 98,181,322,038.32/424,256.28
  6. Step 6: Final answer
    x = 231,419.85

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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.