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Finding the Fourth Proportional to 381,254.57, 571,885.96 and 115,017.39

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Solution

The fourth proportional to 381,254.57, 571,885.96 and 115,017.39 is: 172,527.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,254.57 : 571,885.96 = 115,017.39 : x
  2. Step 2: Convert to fraction form
    381,254.57/571,885.96 = 115,017.39/x
  3. Step 3: Cross multiply
    381,254.57x = 571,885.96 × 115,017.39
  4. Step 4: Simplify right side
    381,254.57x = 65,776,830,209.30
  5. Step 5: Solve for x
    x = 65,776,830,209.30/381,254.57
  6. Step 6: Final answer
    x = 172,527.32

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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.