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Finding the Fourth Proportional to 381,511.17, 572,387.07 and 239,455.26

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Solution

The fourth proportional to 381,511.17, 572,387.07 and 239,455.26 is: 359,258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,511.17 : 572,387.07 = 239,455.26 : x
  2. Step 2: Convert to fraction form
    381,511.17/572,387.07 = 239,455.26/x
  3. Step 3: Cross multiply
    381,511.17x = 572,387.07 × 239,455.26
  4. Step 4: Simplify right side
    381,511.17x = 137,061,094,667.49
  5. Step 5: Solve for x
    x = 137,061,094,667.49/381,511.17
  6. Step 6: Final answer
    x = 359,258.41

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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.