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Finding the Fourth Proportional to 276,672.30, 415,008.45 and 136,412.70

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Solution

The fourth proportional to 276,672.30, 415,008.45 and 136,412.70 is: 204,619.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,672.30 : 415,008.45 = 136,412.70 : x
  2. Step 2: Convert to fraction form
    276,672.30/415,008.45 = 136,412.70/x
  3. Step 3: Cross multiply
    276,672.30x = 415,008.45 × 136,412.70
  4. Step 4: Simplify right side
    276,672.30x = 56,612,423,187.32
  5. Step 5: Solve for x
    x = 56,612,423,187.32/276,672.30
  6. Step 6: Final answer
    x = 204,619.05

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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.