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Finding the Fourth Proportional to 276,934.77, 415,476.55 and 87,402.47

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Solution

The fourth proportional to 276,934.77, 415,476.55 and 87,402.47 is: 131,127.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,934.77 : 415,476.55 = 87,402.47 : x
  2. Step 2: Convert to fraction form
    276,934.77/415,476.55 = 87,402.47/x
  3. Step 3: Cross multiply
    276,934.77x = 415,476.55 × 87,402.47
  4. Step 4: Simplify right side
    276,934.77x = 36,313,675,221.37
  5. Step 5: Solve for x
    x = 36,313,675,221.37/276,934.77
  6. Step 6: Final answer
    x = 131,127.18

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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.