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Finding the Fourth Proportional to 381,886.70, 572,757.15 and 115,655.90

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Solution

The fourth proportional to 381,886.70, 572,757.15 and 115,655.90 is: 173,461.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,886.70 : 572,757.15 = 115,655.90 : x
  2. Step 2: Convert to fraction form
    381,886.70/572,757.15 = 115,655.90/x
  3. Step 3: Cross multiply
    381,886.70x = 572,757.15 × 115,655.90
  4. Step 4: Simplify right side
    381,886.70x = 66,242,743,664.69
  5. Step 5: Solve for x
    x = 66,242,743,664.69/381,886.70
  6. Step 6: Final answer
    x = 173,461.77

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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.