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Finding the Fourth Proportional to 327,180.80, 491,462.40 and 315,430.40

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Solution

The fourth proportional to 327,180.80, 491,462.40 and 315,430.40 is: 473,811.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,180.80 : 491,462.40 = 315,430.40 : x
  2. Step 2: Convert to fraction form
    327,180.80/491,462.40 = 315,430.40/x
  3. Step 3: Cross multiply
    327,180.80x = 491,462.40 × 315,430.40
  4. Step 4: Simplify right side
    327,180.80x = 155,022,181,416.96
  5. Step 5: Solve for x
    x = 155,022,181,416.96/327,180.80
  6. Step 6: Final answer
    x = 473,811.98

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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.