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Finding the Fourth Proportional to 235,743.32, 325,325.72 and 128,314.08

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Solution

The fourth proportional to 235,743.32, 325,325.72 and 128,314.08 is: 177,073.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,743.32 : 325,325.72 = 128,314.08 : x
  2. Step 2: Convert to fraction form
    235,743.32/325,325.72 = 128,314.08/x
  3. Step 3: Cross multiply
    235,743.32x = 325,325.72 × 128,314.08
  4. Step 4: Simplify right side
    235,743.32x = 41,743,872,002.89
  5. Step 5: Solve for x
    x = 41,743,872,002.89/235,743.32
  6. Step 6: Final answer
    x = 177,073.41

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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.