Home / 428,904.20-591,958.78-237,979.10

Finding the Fourth Proportional to 428,904.20, 591,958.78 and 237,979.10

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Solution

The fourth proportional to 428,904.20, 591,958.78 and 237,979.10 is: 328,450.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,904.20 : 591,958.78 = 237,979.10 : x
  2. Step 2: Convert to fraction form
    428,904.20/591,958.78 = 237,979.10/x
  3. Step 3: Cross multiply
    428,904.20x = 591,958.78 × 237,979.10
  4. Step 4: Simplify right side
    428,904.20x = 140,873,817,701.50
  5. Step 5: Solve for x
    x = 140,873,817,701.50/428,904.20
  6. Step 6: Final answer
    x = 328,450.54

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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.