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Finding the Fourth Proportional to 206,687.40, 310,059.90 and 88,357.80

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Solution

The fourth proportional to 206,687.40, 310,059.90 and 88,357.80 is: 132,549.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,687.40 : 310,059.90 = 88,357.80 : x
  2. Step 2: Convert to fraction form
    206,687.40/310,059.90 = 88,357.80/x
  3. Step 3: Cross multiply
    206,687.40x = 310,059.90 × 88,357.80
  4. Step 4: Simplify right side
    206,687.40x = 27,396,210,632.22
  5. Step 5: Solve for x
    x = 27,396,210,632.22/206,687.40
  6. Step 6: Final answer
    x = 132,549.01

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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.