Home / 231,749.76-319,819.20-151,228.80

Finding the Fourth Proportional to 231,749.76, 319,819.20 and 151,228.80

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Solution

The fourth proportional to 231,749.76, 319,819.20 and 151,228.80 is: 208,698.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,749.76 : 319,819.20 = 151,228.80 : x
  2. Step 2: Convert to fraction form
    231,749.76/319,819.20 = 151,228.80/x
  3. Step 3: Cross multiply
    231,749.76x = 319,819.20 × 151,228.80
  4. Step 4: Simplify right side
    231,749.76x = 48,365,873,832.96
  5. Step 5: Solve for x
    x = 48,365,873,832.96/231,749.76
  6. Step 6: Final answer
    x = 208,698.70

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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.