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Finding the Fourth Proportional to 331,488.80, 497,233.20 and 121,099.40

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Solution

The fourth proportional to 331,488.80, 497,233.20 and 121,099.40 is: 181,649.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,488.80 : 497,233.20 = 121,099.40 : x
  2. Step 2: Convert to fraction form
    331,488.80/497,233.20 = 121,099.40/x
  3. Step 3: Cross multiply
    331,488.80x = 497,233.20 × 121,099.40
  4. Step 4: Simplify right side
    331,488.80x = 60,214,642,180.08
  5. Step 5: Solve for x
    x = 60,214,642,180.08/331,488.80
  6. Step 6: Final answer
    x = 181,649.10

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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.