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Finding the Fourth Proportional to 324,341.83, 486,559.18 and 99,721.13

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Solution

The fourth proportional to 324,341.83, 486,559.18 and 99,721.13 is: 149,595.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,341.83 : 486,559.18 = 99,721.13 : x
  2. Step 2: Convert to fraction form
    324,341.83/486,559.18 = 99,721.13/x
  3. Step 3: Cross multiply
    324,341.83x = 486,559.18 × 99,721.13
  4. Step 4: Simplify right side
    324,341.83x = 48,520,231,241.47
  5. Step 5: Solve for x
    x = 48,520,231,241.47/324,341.83
  6. Step 6: Final answer
    x = 149,595.97

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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.