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Finding the Fourth Proportional to 231,527.01, 319,405.92 and 135,990.66

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Solution

The fourth proportional to 231,527.01, 319,405.92 and 135,990.66 is: 187,607.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,527.01 : 319,405.92 = 135,990.66 : x
  2. Step 2: Convert to fraction form
    231,527.01/319,405.92 = 135,990.66/x
  3. Step 3: Cross multiply
    231,527.01x = 319,405.92 × 135,990.66
  4. Step 4: Simplify right side
    231,527.01x = 43,436,221,868.71
  5. Step 5: Solve for x
    x = 43,436,221,868.71/231,527.01
  6. Step 6: Final answer
    x = 187,607.58

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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.