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Finding the Fourth Proportional to 331,468.80, 497,203.20 and 121,079.40

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Solution

The fourth proportional to 331,468.80, 497,203.20 and 121,079.40 is: 181,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,468.80 : 497,203.20 = 121,079.40 : x
  2. Step 2: Convert to fraction form
    331,468.80/497,203.20 = 121,079.40/x
  3. Step 3: Cross multiply
    331,468.80x = 497,203.20 × 121,079.40
  4. Step 4: Simplify right side
    331,468.80x = 60,201,065,134.08
  5. Step 5: Solve for x
    x = 60,201,065,134.08/331,468.80
  6. Step 6: Final answer
    x = 181,619.10

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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.