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Finding the Fourth Proportional to 402,375.86, 603,637.11 and 132,518.69

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Solution

The fourth proportional to 402,375.86, 603,637.11 and 132,518.69 is: 198,802.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,375.86 : 603,637.11 = 132,518.69 : x
  2. Step 2: Convert to fraction form
    402,375.86/603,637.11 = 132,518.69/x
  3. Step 3: Cross multiply
    402,375.86x = 603,637.11 × 132,518.69
  4. Step 4: Simplify right side
    402,375.86x = 79,993,199,052.59
  5. Step 5: Solve for x
    x = 79,993,199,052.59/402,375.86
  6. Step 6: Final answer
    x = 198,802.18

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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.