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Finding the Fourth Proportional to 235,658.90, 325,207.78 and 128,229.35

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Solution

The fourth proportional to 235,658.90, 325,207.78 and 128,229.35 is: 176,955.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,658.90 : 325,207.78 = 128,229.35 : x
  2. Step 2: Convert to fraction form
    235,658.90/325,207.78 = 128,229.35/x
  3. Step 3: Cross multiply
    235,658.90x = 325,207.78 × 128,229.35
  4. Step 4: Simplify right side
    235,658.90x = 41,701,180,297.73
  5. Step 5: Solve for x
    x = 41,701,180,297.73/235,658.90
  6. Step 6: Final answer
    x = 176,955.68

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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.