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Finding the Fourth Proportional to 500,391.42, 750,664.85 and 168,045.18

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Solution

The fourth proportional to 500,391.42, 750,664.85 and 168,045.18 is: 252,093.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,391.42 : 750,664.85 = 168,045.18 : x
  2. Step 2: Convert to fraction form
    500,391.42/750,664.85 = 168,045.18/x
  3. Step 3: Cross multiply
    500,391.42x = 750,664.85 × 168,045.18
  4. Step 4: Simplify right side
    500,391.42x = 126,145,608,997.70
  5. Step 5: Solve for x
    x = 126,145,608,997.70/500,391.42
  6. Step 6: Final answer
    x = 252,093.87

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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.