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Finding the Fourth Proportional to 520,049.29, 780,103.10 and 146,043.13

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Solution

The fourth proportional to 520,049.29, 780,103.10 and 146,043.13 is: 219,072.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,049.29 : 780,103.10 = 146,043.13 : x
  2. Step 2: Convert to fraction form
    520,049.29/780,103.10 = 146,043.13/x
  3. Step 3: Cross multiply
    520,049.29x = 780,103.10 × 146,043.13
  4. Step 4: Simplify right side
    520,049.29x = 113,928,698,446.70
  5. Step 5: Solve for x
    x = 113,928,698,446.70/520,049.29
  6. Step 6: Final answer
    x = 219,072.89

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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.