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Finding the Fourth Proportional to 324,363.80, 486,592.20 and 99,743.10

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Solution

The fourth proportional to 324,363.80, 486,592.20 and 99,743.10 is: 149,628.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,363.80 : 486,592.20 = 99,743.10 : x
  2. Step 2: Convert to fraction form
    324,363.80/486,592.20 = 99,743.10/x
  3. Step 3: Cross multiply
    324,363.80x = 486,592.20 × 99,743.10
  4. Step 4: Simplify right side
    324,363.80x = 48,534,214,463.82
  5. Step 5: Solve for x
    x = 48,534,214,463.82/324,363.80
  6. Step 6: Final answer
    x = 149,628.95

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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.