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Finding the Fourth Proportional to 324,549.18, 486,869.85 and 99,928.29

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Solution

The fourth proportional to 324,549.18, 486,869.85 and 99,928.29 is: 149,906.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,549.18 : 486,869.85 = 99,928.29 : x
  2. Step 2: Convert to fraction form
    324,549.18/486,869.85 = 99,928.29/x
  3. Step 3: Cross multiply
    324,549.18x = 486,869.85 × 99,928.29
  4. Step 4: Simplify right side
    324,549.18x = 48,652,071,563.06
  5. Step 5: Solve for x
    x = 48,652,071,563.06/324,549.18
  6. Step 6: Final answer
    x = 149,906.62

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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.