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Finding the Fourth Proportional to 520,943.96, 781,473 and 165,874.52

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Solution

The fourth proportional to 520,943.96, 781,473 and 165,874.52 is: 248,829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,943.96 : 781,473 = 165,874.52 : x
  2. Step 2: Convert to fraction form
    520,943.96/781,473 = 165,874.52/x
  3. Step 3: Cross multiply
    520,943.96x = 781,473 × 165,874.52
  4. Step 4: Simplify right side
    520,943.96x = 129,626,458,767.96
  5. Step 5: Solve for x
    x = 129,626,458,767.96/520,943.96
  6. Step 6: Final answer
    x = 248,829.95

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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.