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Finding the Fourth Proportional to 235,974.85, 325,644.76 and 128,544.62

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Solution

The fourth proportional to 235,974.85, 325,644.76 and 128,544.62 is: 177,391.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,974.85 : 325,644.76 = 128,544.62 : x
  2. Step 2: Convert to fraction form
    235,974.85/325,644.76 = 128,544.62/x
  3. Step 3: Cross multiply
    235,974.85x = 325,644.76 × 128,544.62
  4. Step 4: Simplify right side
    235,974.85x = 41,859,881,929.19
  5. Step 5: Solve for x
    x = 41,859,881,929.19/235,974.85
  6. Step 6: Final answer
    x = 177,391.29

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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.