Home / 218,729.80-328,140.46-92,370.34

Finding the Fourth Proportional to 218,729.80, 328,140.46 and 92,370.34

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Solution

The fourth proportional to 218,729.80, 328,140.46 and 92,370.34 is: 138,574.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,729.80 : 328,140.46 = 92,370.34 : x
  2. Step 2: Convert to fraction form
    218,729.80/328,140.46 = 92,370.34/x
  3. Step 3: Cross multiply
    218,729.80x = 328,140.46 × 92,370.34
  4. Step 4: Simplify right side
    218,729.80x = 30,310,445,857.96
  5. Step 5: Solve for x
    x = 30,310,445,857.96/218,729.80
  6. Step 6: Final answer
    x = 138,574.83

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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.