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Finding the Fourth Proportional to 372,981.87, 559,960.56 and 221,455.53

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Solution

The fourth proportional to 372,981.87, 559,960.56 and 221,455.53 is: 332,472.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,981.87 : 559,960.56 = 221,455.53 : x
  2. Step 2: Convert to fraction form
    372,981.87/559,960.56 = 221,455.53/x
  3. Step 3: Cross multiply
    372,981.87x = 559,960.56 × 221,455.53
  4. Step 4: Simplify right side
    372,981.87x = 124,006,362,593.90
  5. Step 5: Solve for x
    x = 124,006,362,593.90/372,981.87
  6. Step 6: Final answer
    x = 332,472.90

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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.