Home / 208,590.18-312,563.22-140,856.78

Finding the Fourth Proportional to 208,590.18, 312,563.22 and 140,856.78

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Solution

The fourth proportional to 208,590.18, 312,563.22 and 140,856.78 is: 211,067.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,590.18 : 312,563.22 = 140,856.78 : x
  2. Step 2: Convert to fraction form
    208,590.18/312,563.22 = 140,856.78/x
  3. Step 3: Cross multiply
    208,590.18x = 312,563.22 × 140,856.78
  4. Step 4: Simplify right side
    208,590.18x = 44,026,648,715.63
  5. Step 5: Solve for x
    x = 44,026,648,715.63/208,590.18
  6. Step 6: Final answer
    x = 211,067.70

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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.