Home / 198,246.40-297,271.20-71,881.60

Finding the Fourth Proportional to 198,246.40, 297,271.20 and 71,881.60

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Solution

The fourth proportional to 198,246.40, 297,271.20 and 71,881.60 is: 107,786.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,246.40 : 297,271.20 = 71,881.60 : x
  2. Step 2: Convert to fraction form
    198,246.40/297,271.20 = 71,881.60/x
  3. Step 3: Cross multiply
    198,246.40x = 297,271.20 × 71,881.60
  4. Step 4: Simplify right side
    198,246.40x = 21,368,329,489.92
  5. Step 5: Solve for x
    x = 21,368,329,489.92/198,246.40
  6. Step 6: Final answer
    x = 107,786.72

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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.