Home / 218,982.40-328,473.60-71,238.40

Finding the Fourth Proportional to 218,982.40, 328,473.60 and 71,238.40

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Solution

The fourth proportional to 218,982.40, 328,473.60 and 71,238.40 is: 106,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,982.40 : 328,473.60 = 71,238.40 : x
  2. Step 2: Convert to fraction form
    218,982.40/328,473.60 = 71,238.40/x
  3. Step 3: Cross multiply
    218,982.40x = 328,473.60 × 71,238.40
  4. Step 4: Simplify right side
    218,982.40x = 23,399,933,706.24
  5. Step 5: Solve for x
    x = 23,399,933,706.24/218,982.40
  6. Step 6: Final answer
    x = 106,857.60

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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.