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Finding the Fourth Proportional to 235,278.48, 352,829.40 and 85,481.76

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Solution

The fourth proportional to 235,278.48, 352,829.40 and 85,481.76 is: 128,190.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,278.48 : 352,829.40 = 85,481.76 : x
  2. Step 2: Convert to fraction form
    235,278.48/352,829.40 = 85,481.76/x
  3. Step 3: Cross multiply
    235,278.48x = 352,829.40 × 85,481.76
  4. Step 4: Simplify right side
    235,278.48x = 30,160,478,091.74
  5. Step 5: Solve for x
    x = 30,160,478,091.74/235,278.48
  6. Step 6: Final answer
    x = 128,190.55

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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.