Home / 285,622.80-428,434.20-108,135.60

Finding the Fourth Proportional to 285,622.80, 428,434.20 and 108,135.60

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Solution

The fourth proportional to 285,622.80, 428,434.20 and 108,135.60 is: 162,203.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,622.80 : 428,434.20 = 108,135.60 : x
  2. Step 2: Convert to fraction form
    285,622.80/428,434.20 = 108,135.60/x
  3. Step 3: Cross multiply
    285,622.80x = 428,434.20 × 108,135.60
  4. Step 4: Simplify right side
    285,622.80x = 46,328,989,277.52
  5. Step 5: Solve for x
    x = 46,328,989,277.52/285,622.80
  6. Step 6: Final answer
    x = 162,203.40

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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.