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Finding the Fourth Proportional to 311,587.13, 467,459.56 and 86,947.53

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Solution

The fourth proportional to 311,587.13, 467,459.56 and 86,947.53 is: 130,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,587.13 : 467,459.56 = 86,947.53 : x
  2. Step 2: Convert to fraction form
    311,587.13/467,459.56 = 86,947.53/x
  3. Step 3: Cross multiply
    311,587.13x = 467,459.56 × 86,947.53
  4. Step 4: Simplify right side
    311,587.13x = 40,644,451,983.52
  5. Step 5: Solve for x
    x = 40,644,451,983.52/311,587.13
  6. Step 6: Final answer
    x = 130,443.30

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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.