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Finding the Fourth Proportional to 235,737.76, 325,325 and 128,314.72

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Solution

The fourth proportional to 235,737.76, 325,325 and 128,314.72 is: 177,078.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,737.76 : 325,325 = 128,314.72 : x
  2. Step 2: Convert to fraction form
    235,737.76/325,325 = 128,314.72/x
  3. Step 3: Cross multiply
    235,737.76x = 325,325 × 128,314.72
  4. Step 4: Simplify right side
    235,737.76x = 41,743,986,284
  5. Step 5: Solve for x
    x = 41,743,986,284/235,737.76
  6. Step 6: Final answer
    x = 177,078.06

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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.