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Finding the Fourth Proportional to 487,956.75, 731,963.83 and 188,438.90

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Solution

The fourth proportional to 487,956.75, 731,963.83 and 188,438.90 is: 282,669.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,956.75 : 731,963.83 = 188,438.90 : x
  2. Step 2: Convert to fraction form
    487,956.75/731,963.83 = 188,438.90/x
  3. Step 3: Cross multiply
    487,956.75x = 731,963.83 × 188,438.90
  4. Step 4: Simplify right side
    487,956.75x = 137,930,458,964.99
  5. Step 5: Solve for x
    x = 137,930,458,964.99/487,956.75
  6. Step 6: Final answer
    x = 282,669.44

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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.