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Finding the Fourth Proportional to 170,294.40, 255,441.60 and 81,502.20

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Solution

The fourth proportional to 170,294.40, 255,441.60 and 81,502.20 is: 122,253.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,294.40 : 255,441.60 = 81,502.20 : x
  2. Step 2: Convert to fraction form
    170,294.40/255,441.60 = 81,502.20/x
  3. Step 3: Cross multiply
    170,294.40x = 255,441.60 × 81,502.20
  4. Step 4: Simplify right side
    170,294.40x = 20,819,052,371.52
  5. Step 5: Solve for x
    x = 20,819,052,371.52/170,294.40
  6. Step 6: Final answer
    x = 122,253.30

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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.