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Finding the Fourth Proportional to 303,127.80, 418,142.68 and 189,753.72

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Solution

The fourth proportional to 303,127.80, 418,142.68 and 189,753.72 is: 261,751.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,127.80 : 418,142.68 = 189,753.72 : x
  2. Step 2: Convert to fraction form
    303,127.80/418,142.68 = 189,753.72/x
  3. Step 3: Cross multiply
    303,127.80x = 418,142.68 × 189,753.72
  4. Step 4: Simplify right side
    303,127.80x = 79,344,129,020.77
  5. Step 5: Solve for x
    x = 79,344,129,020.77/303,127.80
  6. Step 6: Final answer
    x = 261,751.41

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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.