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Finding the Fourth Proportional to 397,493.54, 548,491.26 and 268,712.20

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Solution

The fourth proportional to 397,493.54, 548,491.26 and 268,712.20 is: 370,789.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,493.54 : 548,491.26 = 268,712.20 : x
  2. Step 2: Convert to fraction form
    397,493.54/548,491.26 = 268,712.20/x
  3. Step 3: Cross multiply
    397,493.54x = 548,491.26 × 268,712.20
  4. Step 4: Simplify right side
    397,493.54x = 147,386,293,155.37
  5. Step 5: Solve for x
    x = 147,386,293,155.37/397,493.54
  6. Step 6: Final answer
    x = 370,789.15

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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.