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Finding the Fourth Proportional to 279,655.60, 419,483.40 and 92,642.80

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Solution

The fourth proportional to 279,655.60, 419,483.40 and 92,642.80 is: 138,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,655.60 : 419,483.40 = 92,642.80 : x
  2. Step 2: Convert to fraction form
    279,655.60/419,483.40 = 92,642.80/x
  3. Step 3: Cross multiply
    279,655.60x = 419,483.40 × 92,642.80
  4. Step 4: Simplify right side
    279,655.60x = 38,862,116,729.52
  5. Step 5: Solve for x
    x = 38,862,116,729.52/279,655.60
  6. Step 6: Final answer
    x = 138,964.20

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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.