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Finding the Fourth Proportional to 207,496.80, 311,245.20 and 155,008.80

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Solution

The fourth proportional to 207,496.80, 311,245.20 and 155,008.80 is: 232,513.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,496.80 : 311,245.20 = 155,008.80 : x
  2. Step 2: Convert to fraction form
    207,496.80/311,245.20 = 155,008.80/x
  3. Step 3: Cross multiply
    207,496.80x = 311,245.20 × 155,008.80
  4. Step 4: Simplify right side
    207,496.80x = 48,245,744,957.76
  5. Step 5: Solve for x
    x = 48,245,744,957.76/207,496.80
  6. Step 6: Final answer
    x = 232,513.20

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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.