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Finding the Fourth Proportional to 218,139.40, 327,017.10 and 147,790.60

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Solution

The fourth proportional to 218,139.40, 327,017.10 and 147,790.60 is: 221,555.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,139.40 : 327,017.10 = 147,790.60 : x
  2. Step 2: Convert to fraction form
    218,139.40/327,017.10 = 147,790.60/x
  3. Step 3: Cross multiply
    218,139.40x = 327,017.10 × 147,790.60
  4. Step 4: Simplify right side
    218,139.40x = 48,330,053,419.26
  5. Step 5: Solve for x
    x = 48,330,053,419.26/218,139.40
  6. Step 6: Final answer
    x = 221,555.82

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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.