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Finding the Fourth Proportional to 276,032.80, 414,048.69 and 86,507.71

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Solution

The fourth proportional to 276,032.80, 414,048.69 and 86,507.71 is: 129,761.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,032.80 : 414,048.69 = 86,507.71 : x
  2. Step 2: Convert to fraction form
    276,032.80/414,048.69 = 86,507.71/x
  3. Step 3: Cross multiply
    276,032.80x = 414,048.69 × 86,507.71
  4. Step 4: Simplify right side
    276,032.80x = 35,818,404,000.40
  5. Step 5: Solve for x
    x = 35,818,404,000.40/276,032.80
  6. Step 6: Final answer
    x = 129,761.41

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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.