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Finding the Fourth Proportional to 275,990.40, 380,851.20 and 162,849.60

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Solution

The fourth proportional to 275,990.40, 380,851.20 and 162,849.60 is: 224,723.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,990.40 : 380,851.20 = 162,849.60 : x
  2. Step 2: Convert to fraction form
    275,990.40/380,851.20 = 162,849.60/x
  3. Step 3: Cross multiply
    275,990.40x = 380,851.20 × 162,849.60
  4. Step 4: Simplify right side
    275,990.40x = 62,021,465,579.52
  5. Step 5: Solve for x
    x = 62,021,465,579.52/275,990.40
  6. Step 6: Final answer
    x = 224,723.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.