Home / 215,961.28-298,007.92-139,483.76

Finding the Fourth Proportional to 215,961.28, 298,007.92 and 139,483.76

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Solution

The fourth proportional to 215,961.28, 298,007.92 and 139,483.76 is: 192,475.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,961.28 : 298,007.92 = 139,483.76 : x
  2. Step 2: Convert to fraction form
    215,961.28/298,007.92 = 139,483.76/x
  3. Step 3: Cross multiply
    215,961.28x = 298,007.92 × 139,483.76
  4. Step 4: Simplify right side
    215,961.28x = 41,567,265,191.38
  5. Step 5: Solve for x
    x = 41,567,265,191.38/215,961.28
  6. Step 6: Final answer
    x = 192,475.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.