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Finding the Fourth Proportional to 275,614.68, 380,343.42 and 154,756.92

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Solution

The fourth proportional to 275,614.68, 380,343.42 and 154,756.92 is: 213,561.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,614.68 : 380,343.42 = 154,756.92 : x
  2. Step 2: Convert to fraction form
    275,614.68/380,343.42 = 154,756.92/x
  3. Step 3: Cross multiply
    275,614.68x = 380,343.42 × 154,756.92
  4. Step 4: Simplify right side
    275,614.68x = 58,860,776,221.47
  5. Step 5: Solve for x
    x = 58,860,776,221.47/275,614.68
  6. Step 6: Final answer
    x = 213,561.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.