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Finding the Fourth Proportional to 373,670.40, 516,660.48 and 326,431.20

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Solution

The fourth proportional to 373,670.40, 516,660.48 and 326,431.20 is: 451,344.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,670.40 : 516,660.48 = 326,431.20 : x
  2. Step 2: Convert to fraction form
    373,670.40/516,660.48 = 326,431.20/x
  3. Step 3: Cross multiply
    373,670.40x = 516,660.48 × 326,431.20
  4. Step 4: Simplify right side
    373,670.40x = 168,654,100,478.98
  5. Step 5: Solve for x
    x = 168,654,100,478.98/373,670.40
  6. Step 6: Final answer
    x = 451,344.56

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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.