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Finding the Fourth Proportional to 658,441.80, 987,662.70 and 159,805.80

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Solution

The fourth proportional to 658,441.80, 987,662.70 and 159,805.80 is: 239,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,441.80 : 987,662.70 = 159,805.80 : x
  2. Step 2: Convert to fraction form
    658,441.80/987,662.70 = 159,805.80/x
  3. Step 3: Cross multiply
    658,441.80x = 987,662.70 × 159,805.80
  4. Step 4: Simplify right side
    658,441.80x = 157,834,227,903.66
  5. Step 5: Solve for x
    x = 157,834,227,903.66/658,441.80
  6. Step 6: Final answer
    x = 239,708.70

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Similar ratio
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1.5x scale

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.