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Finding the Fourth Proportional to 279,008.80, 418,610.40 and 121,350.40

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Solution

The fourth proportional to 279,008.80, 418,610.40 and 121,350.40 is: 182,067.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,008.80 : 418,610.40 = 121,350.40 : x
  2. Step 2: Convert to fraction form
    279,008.80/418,610.40 = 121,350.40/x
  3. Step 3: Cross multiply
    279,008.80x = 418,610.40 × 121,350.40
  4. Step 4: Simplify right side
    279,008.80x = 50,798,539,484.16
  5. Step 5: Solve for x
    x = 50,798,539,484.16/279,008.80
  6. Step 6: Final answer
    x = 182,067.88

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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.