Home / 208,229.76-312,338.88-58,471.20

Finding the Fourth Proportional to 208,229.76, 312,338.88 and 58,471.20

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Solution

The fourth proportional to 208,229.76, 312,338.88 and 58,471.20 is: 87,705.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,229.76 : 312,338.88 = 58,471.20 : x
  2. Step 2: Convert to fraction form
    208,229.76/312,338.88 = 58,471.20/x
  3. Step 3: Cross multiply
    208,229.76x = 312,338.88 × 58,471.20
  4. Step 4: Simplify right side
    208,229.76x = 18,262,829,120.26
  5. Step 5: Solve for x
    x = 18,262,829,120.26/208,229.76
  6. Step 6: Final answer
    x = 87,705.18

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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.