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Finding the Fourth Proportional to 389,900.20, 584,850.30 and 179,948.20

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Solution

The fourth proportional to 389,900.20, 584,850.30 and 179,948.20 is: 269,922.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,900.20 : 584,850.30 = 179,948.20 : x
  2. Step 2: Convert to fraction form
    389,900.20/584,850.30 = 179,948.20/x
  3. Step 3: Cross multiply
    389,900.20x = 584,850.30 × 179,948.20
  4. Step 4: Simplify right side
    389,900.20x = 105,242,758,754.46
  5. Step 5: Solve for x
    x = 105,242,758,754.46/389,900.20
  6. Step 6: Final answer
    x = 269,922.30

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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.