Home / 290,749.76-435,811.20-140,672.96

Finding the Fourth Proportional to 290,749.76, 435,811.20 and 140,672.96

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Solution

The fourth proportional to 290,749.76, 435,811.20 and 140,672.96 is: 210,857.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,749.76 : 435,811.20 = 140,672.96 : x
  2. Step 2: Convert to fraction form
    290,749.76/435,811.20 = 140,672.96/x
  3. Step 3: Cross multiply
    290,749.76x = 435,811.20 × 140,672.96
  4. Step 4: Simplify right side
    290,749.76x = 61,306,851,505.15
  5. Step 5: Solve for x
    x = 61,306,851,505.15/290,749.76
  6. Step 6: Final answer
    x = 210,857.79

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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.