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Finding the Fourth Proportional to 235,822.13, 325,424.34 and 128,392.55

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Solution

The fourth proportional to 235,822.13, 325,424.34 and 128,392.55 is: 177,176.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,822.13 : 325,424.34 = 128,392.55 : x
  2. Step 2: Convert to fraction form
    235,822.13/325,424.34 = 128,392.55/x
  3. Step 3: Cross multiply
    235,822.13x = 325,424.34 × 128,392.55
  4. Step 4: Simplify right side
    235,822.13x = 41,782,059,217.55
  5. Step 5: Solve for x
    x = 41,782,059,217.55/235,822.13
  6. Step 6: Final answer
    x = 177,176.16

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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.