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Finding the Fourth Proportional to 503,507.68, 755,261.54 and 187,989.20

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Solution

The fourth proportional to 503,507.68, 755,261.54 and 187,989.20 is: 281,983.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,507.68 : 755,261.54 = 187,989.20 : x
  2. Step 2: Convert to fraction form
    503,507.68/755,261.54 = 187,989.20/x
  3. Step 3: Cross multiply
    503,507.68x = 755,261.54 × 187,989.20
  4. Step 4: Simplify right side
    503,507.68x = 141,981,012,695.37
  5. Step 5: Solve for x
    x = 141,981,012,695.37/503,507.68
  6. Step 6: Final answer
    x = 281,983.81

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Similar ratio
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1.5x scale

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.