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Finding the Fourth Proportional to 235,770.96, 325,363.56 and 128,340.66

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Solution

The fourth proportional to 235,770.96, 325,363.56 and 128,340.66 is: 177,109.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,770.96 : 325,363.56 = 128,340.66 : x
  2. Step 2: Convert to fraction form
    235,770.96/325,363.56 = 128,340.66/x
  3. Step 3: Cross multiply
    235,770.96x = 325,363.56 × 128,340.66
  4. Step 4: Simplify right side
    235,770.96x = 41,757,374,030.35
  5. Step 5: Solve for x
    x = 41,757,374,030.35/235,770.96
  6. Step 6: Final answer
    x = 177,109.91

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1.5x scale

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.