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Finding the Fourth Proportional to 283,079.37, 390,660.29 and 162,243.98

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Solution

The fourth proportional to 283,079.37, 390,660.29 and 162,243.98 is: 223,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,079.37 : 390,660.29 = 162,243.98 : x
  2. Step 2: Convert to fraction form
    283,079.37/390,660.29 = 162,243.98/x
  3. Step 3: Cross multiply
    283,079.37x = 390,660.29 × 162,243.98
  4. Step 4: Simplify right side
    283,079.37x = 63,382,279,586.42
  5. Step 5: Solve for x
    x = 63,382,279,586.42/283,079.37
  6. Step 6: Final answer
    x = 223,902.85

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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.