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Finding the Fourth Proportional to 485,426.80, 728,010.60 and 148,466.80

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Solution

The fourth proportional to 485,426.80, 728,010.60 and 148,466.80 is: 222,660.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,426.80 : 728,010.60 = 148,466.80 : x
  2. Step 2: Convert to fraction form
    485,426.80/728,010.60 = 148,466.80/x
  3. Step 3: Cross multiply
    485,426.80x = 728,010.60 × 148,466.80
  4. Step 4: Simplify right side
    485,426.80x = 108,085,404,148.08
  5. Step 5: Solve for x
    x = 108,085,404,148.08/485,426.80
  6. Step 6: Final answer
    x = 222,660.56

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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.