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Finding the Fourth Proportional to 235,634.80, 325,166.31 and 128,205.26

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Solution

The fourth proportional to 235,634.80, 325,166.31 and 128,205.26 is: 176,917.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,634.80 : 325,166.31 = 128,205.26 : x
  2. Step 2: Convert to fraction form
    235,634.80/325,166.31 = 128,205.26/x
  3. Step 3: Cross multiply
    235,634.80x = 325,166.31 × 128,205.26
  4. Step 4: Simplify right side
    235,634.80x = 41,688,031,316.79
  5. Step 5: Solve for x
    x = 41,688,031,316.79/235,634.80
  6. Step 6: Final answer
    x = 176,917.97

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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.