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Finding the Fourth Proportional to 520,091.30, 779,704.95 and 220,801.70

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Solution

The fourth proportional to 520,091.30, 779,704.95 and 220,801.70 is: 331,019.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,091.30 : 779,704.95 = 220,801.70 : x
  2. Step 2: Convert to fraction form
    520,091.30/779,704.95 = 220,801.70/x
  3. Step 3: Cross multiply
    520,091.30x = 779,704.95 × 220,801.70
  4. Step 4: Simplify right side
    520,091.30x = 172,160,178,458.42
  5. Step 5: Solve for x
    x = 172,160,178,458.42/520,091.30
  6. Step 6: Final answer
    x = 331,019.15

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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.