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Finding the Fourth Proportional to 487,494.60, 731,333.48 and 221,273.83

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Solution

The fourth proportional to 487,494.60, 731,333.48 and 221,273.83 is: 331,952.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,494.60 : 731,333.48 = 221,273.83 : x
  2. Step 2: Convert to fraction form
    487,494.60/731,333.48 = 221,273.83/x
  3. Step 3: Cross multiply
    487,494.60x = 731,333.48 × 221,273.83
  4. Step 4: Simplify right side
    487,494.60x = 161,824,957,687.87
  5. Step 5: Solve for x
    x = 161,824,957,687.87/487,494.60
  6. Step 6: Final answer
    x = 331,952.31

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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.