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Finding the Fourth Proportional to 235,989.92, 325,664.82 and 128,559.69

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Solution

The fourth proportional to 235,989.92, 325,664.82 and 128,559.69 is: 177,411.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,989.92 : 325,664.82 = 128,559.69 : x
  2. Step 2: Convert to fraction form
    235,989.92/325,664.82 = 128,559.69/x
  3. Step 3: Cross multiply
    235,989.92x = 325,664.82 × 128,559.69
  4. Step 4: Simplify right side
    235,989.92x = 41,867,368,303.11
  5. Step 5: Solve for x
    x = 41,867,368,303.11/235,989.92
  6. Step 6: Final answer
    x = 177,411.68

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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.