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Finding the Fourth Proportional to 275,310.42, 412,301.03 and 156,621.93

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Solution

The fourth proportional to 275,310.42, 412,301.03 and 156,621.93 is: 234,554.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,310.42 : 412,301.03 = 156,621.93 : x
  2. Step 2: Convert to fraction form
    275,310.42/412,301.03 = 156,621.93/x
  3. Step 3: Cross multiply
    275,310.42x = 412,301.03 × 156,621.93
  4. Step 4: Simplify right side
    275,310.42x = 64,575,382,276.48
  5. Step 5: Solve for x
    x = 64,575,382,276.48/275,310.42
  6. Step 6: Final answer
    x = 234,554.81

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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.