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Finding the Fourth Proportional to 276,042.79, 414,064.24 and 86,503.12

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Solution

The fourth proportional to 276,042.79, 414,064.24 and 86,503.12 is: 129,754.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,042.79 : 414,064.24 = 86,503.12 : x
  2. Step 2: Convert to fraction form
    276,042.79/414,064.24 = 86,503.12/x
  3. Step 3: Cross multiply
    276,042.79x = 414,064.24 × 86,503.12
  4. Step 4: Simplify right side
    276,042.79x = 35,817,849,718.12
  5. Step 5: Solve for x
    x = 35,817,849,718.12/276,042.79
  6. Step 6: Final answer
    x = 129,754.70

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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.