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Finding the Fourth Proportional to 331,444.40, 497,238.60 and 121,082

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Solution

The fourth proportional to 331,444.40, 497,238.60 and 121,082 is: 181,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,444.40 : 497,238.60 = 121,082 : x
  2. Step 2: Convert to fraction form
    331,444.40/497,238.60 = 121,082/x
  3. Step 3: Cross multiply
    331,444.40x = 497,238.60 × 121,082
  4. Step 4: Simplify right side
    331,444.40x = 60,206,644,165.20
  5. Step 5: Solve for x
    x = 60,206,644,165.20/331,444.40
  6. Step 6: Final answer
    x = 181,649.30

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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.