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Finding the Fourth Proportional to 435,990.92, 653,718.72 and 169,440.20

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Solution

The fourth proportional to 435,990.92, 653,718.72 and 169,440.20 is: 254,056.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,990.92 : 653,718.72 = 169,440.20 : x
  2. Step 2: Convert to fraction form
    435,990.92/653,718.72 = 169,440.20/x
  3. Step 3: Cross multiply
    435,990.92x = 653,718.72 × 169,440.20
  4. Step 4: Simplify right side
    435,990.92x = 110,766,230,660.54
  5. Step 5: Solve for x
    x = 110,766,230,660.54/435,990.92
  6. Step 6: Final answer
    x = 254,056.28

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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.