Home / 285,977.20-428,965.80-219,751.60

Finding the Fourth Proportional to 285,977.20, 428,965.80 and 219,751.60

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Solution

The fourth proportional to 285,977.20, 428,965.80 and 219,751.60 is: 329,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,977.20 : 428,965.80 = 219,751.60 : x
  2. Step 2: Convert to fraction form
    285,977.20/428,965.80 = 219,751.60/x
  3. Step 3: Cross multiply
    285,977.20x = 428,965.80 × 219,751.60
  4. Step 4: Simplify right side
    285,977.20x = 94,265,920,895.28
  5. Step 5: Solve for x
    x = 94,265,920,895.28/285,977.20
  6. Step 6: Final answer
    x = 329,627.40

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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.