Home / 393,097.30-542,474.45-223,331.70

Finding the Fourth Proportional to 393,097.30, 542,474.45 and 223,331.70

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Solution

The fourth proportional to 393,097.30, 542,474.45 and 223,331.70 is: 308,197.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,097.30 : 542,474.45 = 223,331.70 : x
  2. Step 2: Convert to fraction form
    393,097.30/542,474.45 = 223,331.70/x
  3. Step 3: Cross multiply
    393,097.30x = 542,474.45 × 223,331.70
  4. Step 4: Simplify right side
    393,097.30x = 121,151,741,125.07
  5. Step 5: Solve for x
    x = 121,151,741,125.07/393,097.30
  6. Step 6: Final answer
    x = 308,197.85

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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.