Home / 427,422.40-641,191.20-147,025.60

Finding the Fourth Proportional to 427,422.40, 641,191.20 and 147,025.60

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Solution

The fourth proportional to 427,422.40, 641,191.20 and 147,025.60 is: 220,558.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,422.40 : 641,191.20 = 147,025.60 : x
  2. Step 2: Convert to fraction form
    427,422.40/641,191.20 = 147,025.60/x
  3. Step 3: Cross multiply
    427,422.40x = 641,191.20 × 147,025.60
  4. Step 4: Simplify right side
    427,422.40x = 94,271,520,894.72
  5. Step 5: Solve for x
    x = 94,271,520,894.72/427,422.40
  6. Step 6: Final answer
    x = 220,558.21

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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.