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Finding the Fourth Proportional to 487,683.79, 731,451.78 and 132,725.48

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Solution

The fourth proportional to 487,683.79, 731,451.78 and 132,725.48 is: 199,068.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,683.79 : 731,451.78 = 132,725.48 : x
  2. Step 2: Convert to fraction form
    487,683.79/731,451.78 = 132,725.48/x
  3. Step 3: Cross multiply
    487,683.79x = 731,451.78 × 132,725.48
  4. Step 4: Simplify right side
    487,683.79x = 97,082,284,940.10
  5. Step 5: Solve for x
    x = 97,082,284,940.10/487,683.79
  6. Step 6: Final answer
    x = 199,068.10

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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.