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Finding the Fourth Proportional to 279,429.92, 418,810.08 and 129,466.88

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Solution

The fourth proportional to 279,429.92, 418,810.08 and 129,466.88 is: 194,045.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,429.92 : 418,810.08 = 129,466.88 : x
  2. Step 2: Convert to fraction form
    279,429.92/418,810.08 = 129,466.88/x
  3. Step 3: Cross multiply
    279,429.92x = 418,810.08 × 129,466.88
  4. Step 4: Simplify right side
    279,429.92x = 54,222,034,370.15
  5. Step 5: Solve for x
    x = 54,222,034,370.15/279,429.92
  6. Step 6: Final answer
    x = 194,045.20

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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.