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Finding the Fourth Proportional to 276,665.70, 415,071.45 and 99,154.20

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Solution

The fourth proportional to 276,665.70, 415,071.45 and 99,154.20 is: 148,757.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,665.70 : 415,071.45 = 99,154.20 : x
  2. Step 2: Convert to fraction form
    276,665.70/415,071.45 = 99,154.20/x
  3. Step 3: Cross multiply
    276,665.70x = 415,071.45 × 99,154.20
  4. Step 4: Simplify right side
    276,665.70x = 41,156,077,567.59
  5. Step 5: Solve for x
    x = 41,156,077,567.59/276,665.70
  6. Step 6: Final answer
    x = 148,757.43

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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.