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Finding the Fourth Proportional to 327,629.60, 491,703.60 and 128,045.60

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Solution

The fourth proportional to 327,629.60, 491,703.60 and 128,045.60 is: 192,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,629.60 : 491,703.60 = 128,045.60 : x
  2. Step 2: Convert to fraction form
    327,629.60/491,703.60 = 128,045.60/x
  3. Step 3: Cross multiply
    327,629.60x = 491,703.60 × 128,045.60
  4. Step 4: Simplify right side
    327,629.60x = 62,960,482,484.16
  5. Step 5: Solve for x
    x = 62,960,482,484.16/327,629.60
  6. Step 6: Final answer
    x = 192,169.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.