Home / 208,591.18-312,564.72-140,857.78

Finding the Fourth Proportional to 208,591.18, 312,564.72 and 140,857.78

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Solution

The fourth proportional to 208,591.18, 312,564.72 and 140,857.78 is: 211,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,591.18 : 312,564.72 = 140,857.78 : x
  2. Step 2: Convert to fraction form
    208,591.18/312,564.72 = 140,857.78/x
  3. Step 3: Cross multiply
    208,591.18x = 312,564.72 × 140,857.78
  4. Step 4: Simplify right side
    208,591.18x = 44,027,172,565.52
  5. Step 5: Solve for x
    x = 44,027,172,565.52/208,591.18
  6. Step 6: Final answer
    x = 211,069.20

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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.