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Finding the Fourth Proportional to 520,930.38, 781,276.86 and 250,920.57

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Solution

The fourth proportional to 520,930.38, 781,276.86 and 250,920.57 is: 376,323.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,930.38 : 781,276.86 = 250,920.57 : x
  2. Step 2: Convert to fraction form
    520,930.38/781,276.86 = 250,920.57/x
  3. Step 3: Cross multiply
    520,930.38x = 781,276.86 × 250,920.57
  4. Step 4: Simplify right side
    520,930.38x = 196,038,435,039.01
  5. Step 5: Solve for x
    x = 196,038,435,039.01/520,930.38
  6. Step 6: Final answer
    x = 376,323.68

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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.