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Finding the Fourth Proportional to 324,340.83, 486,557.68 and 99,720.13

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Solution

The fourth proportional to 324,340.83, 486,557.68 and 99,720.13 is: 149,594.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,340.83 : 486,557.68 = 99,720.13 : x
  2. Step 2: Convert to fraction form
    324,340.83/486,557.68 = 99,720.13/x
  3. Step 3: Cross multiply
    324,340.83x = 486,557.68 × 99,720.13
  4. Step 4: Simplify right side
    324,340.83x = 48,519,592,170.71
  5. Step 5: Solve for x
    x = 48,519,592,170.71/324,340.83
  6. Step 6: Final answer
    x = 149,594.46

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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.