Home / 427,588.20-641,231.10-147,040.20

Finding the Fourth Proportional to 427,588.20, 641,231.10 and 147,040.20

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Solution

The fourth proportional to 427,588.20, 641,231.10 and 147,040.20 is: 220,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,588.20 : 641,231.10 = 147,040.20 : x
  2. Step 2: Convert to fraction form
    427,588.20/641,231.10 = 147,040.20/x
  3. Step 3: Cross multiply
    427,588.20x = 641,231.10 × 147,040.20
  4. Step 4: Simplify right side
    427,588.20x = 94,286,749,190.22
  5. Step 5: Solve for x
    x = 94,286,749,190.22/427,588.20
  6. Step 6: Final answer
    x = 220,508.30

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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.