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Finding the Fourth Proportional to 235,775.70, 325,370.51 and 128,346.54

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Solution

The fourth proportional to 235,775.70, 325,370.51 and 128,346.54 is: 177,118.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,775.70 : 325,370.51 = 128,346.54 : x
  2. Step 2: Convert to fraction form
    235,775.70/325,370.51 = 128,346.54/x
  3. Step 3: Cross multiply
    235,775.70x = 325,370.51 × 128,346.54
  4. Step 4: Simplify right side
    235,775.70x = 41,760,177,721.38
  5. Step 5: Solve for x
    x = 41,760,177,721.38/235,775.70
  6. Step 6: Final answer
    x = 177,118.24

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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.