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Finding the Fourth Proportional to 381,526.36, 572,343.18 and 115,256.68

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Solution

The fourth proportional to 381,526.36, 572,343.18 and 115,256.68 is: 172,901.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,526.36 : 572,343.18 = 115,256.68 : x
  2. Step 2: Convert to fraction form
    381,526.36/572,343.18 = 115,256.68/x
  3. Step 3: Cross multiply
    381,526.36x = 572,343.18 × 115,256.68
  4. Step 4: Simplify right side
    381,526.36x = 65,966,374,747.44
  5. Step 5: Solve for x
    x = 65,966,374,747.44/381,526.36
  6. Step 6: Final answer
    x = 172,901.22

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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.