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Finding the Fourth Proportional to 578,012.28, 866,930.80 and 157,320.96

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Solution

The fourth proportional to 578,012.28, 866,930.80 and 157,320.96 is: 235,957.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,012.28 : 866,930.80 = 157,320.96 : x
  2. Step 2: Convert to fraction form
    578,012.28/866,930.80 = 157,320.96/x
  3. Step 3: Cross multiply
    578,012.28x = 866,930.80 × 157,320.96
  4. Step 4: Simplify right side
    578,012.28x = 136,386,385,709.57
  5. Step 5: Solve for x
    x = 136,386,385,709.57/578,012.28
  6. Step 6: Final answer
    x = 235,957.59

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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.