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Finding the Fourth Proportional to 527,666.72, 791,488.98 and 128,309.56

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Solution

The fourth proportional to 527,666.72, 791,488.98 and 128,309.56 is: 192,461.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,666.72 : 791,488.98 = 128,309.56 : x
  2. Step 2: Convert to fraction form
    527,666.72/791,488.98 = 128,309.56/x
  3. Step 3: Cross multiply
    527,666.72x = 791,488.98 × 128,309.56
  4. Step 4: Simplify right side
    527,666.72x = 101,555,602,768.65
  5. Step 5: Solve for x
    x = 101,555,602,768.65/527,666.72
  6. Step 6: Final answer
    x = 192,461.64

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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.