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Finding the Fourth Proportional to 488,617.49, 732,915.80 and 133,631.51

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Solution

The fourth proportional to 488,617.49, 732,915.80 and 133,631.51 is: 200,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,617.49 : 732,915.80 = 133,631.51 : x
  2. Step 2: Convert to fraction form
    488,617.49/732,915.80 = 133,631.51/x
  3. Step 3: Cross multiply
    488,617.49x = 732,915.80 × 133,631.51
  4. Step 4: Simplify right side
    488,617.49x = 97,940,640,724.12
  5. Step 5: Solve for x
    x = 97,940,640,724.12/488,617.49
  6. Step 6: Final answer
    x = 200,444.40

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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.