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Finding the Fourth Proportional to 331,685.70, 497,419.20 and 121,296.30

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Solution

The fourth proportional to 331,685.70, 497,419.20 and 121,296.30 is: 181,904.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,685.70 : 497,419.20 = 121,296.30 : x
  2. Step 2: Convert to fraction form
    331,685.70/497,419.20 = 121,296.30/x
  3. Step 3: Cross multiply
    331,685.70x = 497,419.20 × 121,296.30
  4. Step 4: Simplify right side
    331,685.70x = 60,335,108,508.96
  5. Step 5: Solve for x
    x = 60,335,108,508.96/331,685.70
  6. Step 6: Final answer
    x = 181,904.46

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1.5x scale

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.