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Finding the Fourth Proportional to 434,862.81, 652,355.71 and 135,373.61

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Solution

The fourth proportional to 434,862.81, 652,355.71 and 135,373.61 is: 203,079.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,862.81 : 652,355.71 = 135,373.61 : x
  2. Step 2: Convert to fraction form
    434,862.81/652,355.71 = 135,373.61/x
  3. Step 3: Cross multiply
    434,862.81x = 652,355.71 × 135,373.61
  4. Step 4: Simplify right side
    434,862.81x = 88,311,748,759.27
  5. Step 5: Solve for x
    x = 88,311,748,759.27/434,862.81
  6. Step 6: Final answer
    x = 203,079.56

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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.