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Finding the Fourth Proportional to 407,680.80, 611,521.20 and 158,200.80

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Solution

The fourth proportional to 407,680.80, 611,521.20 and 158,200.80 is: 237,301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,680.80 : 611,521.20 = 158,200.80 : x
  2. Step 2: Convert to fraction form
    407,680.80/611,521.20 = 158,200.80/x
  3. Step 3: Cross multiply
    407,680.80x = 611,521.20 × 158,200.80
  4. Step 4: Simplify right side
    407,680.80x = 96,743,143,056.96
  5. Step 5: Solve for x
    x = 96,743,143,056.96/407,680.80
  6. Step 6: Final answer
    x = 237,301.20

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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.