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Finding the Fourth Proportional to 487,267.32, 730,620.43 and 187,708.92

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Solution

The fourth proportional to 487,267.32, 730,620.43 and 187,708.92 is: 281,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,267.32 : 730,620.43 = 187,708.92 : x
  2. Step 2: Convert to fraction form
    487,267.32/730,620.43 = 187,708.92/x
  3. Step 3: Cross multiply
    487,267.32x = 730,620.43 × 187,708.92
  4. Step 4: Simplify right side
    487,267.32x = 137,143,971,218.94
  5. Step 5: Solve for x
    x = 137,143,971,218.94/487,267.32
  6. Step 6: Final answer
    x = 281,455.30

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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.