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Finding the Fourth Proportional to 253,195.40, 379,850.70 and 147,960.20

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Solution

The fourth proportional to 253,195.40, 379,850.70 and 147,960.20 is: 221,973.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,195.40 : 379,850.70 = 147,960.20 : x
  2. Step 2: Convert to fraction form
    253,195.40/379,850.70 = 147,960.20/x
  3. Step 3: Cross multiply
    253,195.40x = 379,850.70 × 147,960.20
  4. Step 4: Simplify right side
    253,195.40x = 56,202,785,542.14
  5. Step 5: Solve for x
    x = 56,202,785,542.14/253,195.40
  6. Step 6: Final answer
    x = 221,973.96

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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.