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Finding the Fourth Proportional to 488,631.72, 732,937.20 and 133,645.74

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Solution

The fourth proportional to 488,631.72, 732,937.20 and 133,645.74 is: 200,465.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,631.72 : 732,937.20 = 133,645.74 : x
  2. Step 2: Convert to fraction form
    488,631.72/732,937.20 = 133,645.74/x
  3. Step 3: Cross multiply
    488,631.72x = 732,937.20 × 133,645.74
  4. Step 4: Simplify right side
    488,631.72x = 97,953,934,467.53
  5. Step 5: Solve for x
    x = 97,953,934,467.53/488,631.72
  6. Step 6: Final answer
    x = 200,465.77

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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.