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Finding the Fourth Proportional to 393,364.62, 542,761.83 and 229,989.65

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Solution

The fourth proportional to 393,364.62, 542,761.83 and 229,989.65 is: 317,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,364.62 : 542,761.83 = 229,989.65 : x
  2. Step 2: Convert to fraction form
    393,364.62/542,761.83 = 229,989.65/x
  3. Step 3: Cross multiply
    393,364.62x = 542,761.83 × 229,989.65
  4. Step 4: Simplify right side
    393,364.62x = 124,829,600,601.25
  5. Step 5: Solve for x
    x = 124,829,600,601.25/393,364.62
  6. Step 6: Final answer
    x = 317,338.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.