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Finding the Fourth Proportional to 424,489.28, 636,685.32 and 158,258.48

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Solution

The fourth proportional to 424,489.28, 636,685.32 and 158,258.48 is: 237,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,489.28 : 636,685.32 = 158,258.48 : x
  2. Step 2: Convert to fraction form
    424,489.28/636,685.32 = 158,258.48/x
  3. Step 3: Cross multiply
    424,489.28x = 636,685.32 × 158,258.48
  4. Step 4: Simplify right side
    424,489.28x = 100,760,850,981.51
  5. Step 5: Solve for x
    x = 100,760,850,981.51/424,489.28
  6. Step 6: Final answer
    x = 237,369.60

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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.