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Finding the Fourth Proportional to 527,397.51, 791,101.22 and 128,041.79

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Solution

The fourth proportional to 527,397.51, 791,101.22 and 128,041.79 is: 192,063.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,397.51 : 791,101.22 = 128,041.79 : x
  2. Step 2: Convert to fraction form
    527,397.51/791,101.22 = 128,041.79/x
  3. Step 3: Cross multiply
    527,397.51x = 791,101.22 × 128,041.79
  4. Step 4: Simplify right side
    527,397.51x = 101,294,011,684.27
  5. Step 5: Solve for x
    x = 101,294,011,684.27/527,397.51
  6. Step 6: Final answer
    x = 192,063.88

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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.