Home / 218,691.40-328,166.70-144,025.60

Finding the Fourth Proportional to 218,691.40, 328,166.70 and 144,025.60

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Solution

The fourth proportional to 218,691.40, 328,166.70 and 144,025.60 is: 216,123.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,691.40 : 328,166.70 = 144,025.60 : x
  2. Step 2: Convert to fraction form
    218,691.40/328,166.70 = 144,025.60/x
  3. Step 3: Cross multiply
    218,691.40x = 328,166.70 × 144,025.60
  4. Step 4: Simplify right side
    218,691.40x = 47,264,405,867.52
  5. Step 5: Solve for x
    x = 47,264,405,867.52/218,691.40
  6. Step 6: Final answer
    x = 216,123.75

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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.