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Finding the Fourth Proportional to 324,073.13, 486,108.25 and 87,439.37

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Solution

The fourth proportional to 324,073.13, 486,108.25 and 87,439.37 is: 131,158.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,073.13 : 486,108.25 = 87,439.37 : x
  2. Step 2: Convert to fraction form
    324,073.13/486,108.25 = 87,439.37/x
  3. Step 3: Cross multiply
    324,073.13x = 486,108.25 × 87,439.37
  4. Step 4: Simplify right side
    324,073.13x = 42,504,996,482.66
  5. Step 5: Solve for x
    x = 42,504,996,482.66/324,073.13
  6. Step 6: Final answer
    x = 131,158.66

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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.