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Finding the Fourth Proportional to 487,273.94, 730,630.36 and 187,715.55

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Solution

The fourth proportional to 487,273.94, 730,630.36 and 187,715.55 is: 281,465.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,273.94 : 730,630.36 = 187,715.55 : x
  2. Step 2: Convert to fraction form
    487,273.94/730,630.36 = 187,715.55/x
  3. Step 3: Cross multiply
    487,273.94x = 730,630.36 × 187,715.55
  4. Step 4: Simplify right side
    487,273.94x = 137,150,679,874.10
  5. Step 5: Solve for x
    x = 137,150,679,874.10/487,273.94
  6. Step 6: Final answer
    x = 281,465.25

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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.