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Finding the Fourth Proportional to 381,369.96, 572,058.90 and 115,132.68

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Solution

The fourth proportional to 381,369.96, 572,058.90 and 115,132.68 is: 172,700.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,369.96 : 572,058.90 = 115,132.68 : x
  2. Step 2: Convert to fraction form
    381,369.96/572,058.90 = 115,132.68/x
  3. Step 3: Cross multiply
    381,369.96x = 572,058.90 × 115,132.68
  4. Step 4: Simplify right side
    381,369.96x = 65,862,674,274.85
  5. Step 5: Solve for x
    x = 65,862,674,274.85/381,369.96
  6. Step 6: Final answer
    x = 172,700.22

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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.