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Finding the Fourth Proportional to 285,480.40, 428,220.60 and 179,957.20

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Solution

The fourth proportional to 285,480.40, 428,220.60 and 179,957.20 is: 269,935.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,480.40 : 428,220.60 = 179,957.20 : x
  2. Step 2: Convert to fraction form
    285,480.40/428,220.60 = 179,957.20/x
  3. Step 3: Cross multiply
    285,480.40x = 428,220.60 × 179,957.20
  4. Step 4: Simplify right side
    285,480.40x = 77,061,380,158.32
  5. Step 5: Solve for x
    x = 77,061,380,158.32/285,480.40
  6. Step 6: Final answer
    x = 269,935.80

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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.