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Finding the Fourth Proportional to 235,659.20, 325,212.96 and 128,232.32

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Solution

The fourth proportional to 235,659.20, 325,212.96 and 128,232.32 is: 176,962.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,659.20 : 325,212.96 = 128,232.32 : x
  2. Step 2: Convert to fraction form
    235,659.20/325,212.96 = 128,232.32/x
  3. Step 3: Cross multiply
    235,659.20x = 325,212.96 × 128,232.32
  4. Step 4: Simplify right side
    235,659.20x = 41,702,812,354.87
  5. Step 5: Solve for x
    x = 41,702,812,354.87/235,659.20
  6. Step 6: Final answer
    x = 176,962.38

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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.