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Finding the Fourth Proportional to 265,788.90, 396,989.18 and 240,449.60

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Solution

The fourth proportional to 265,788.90, 396,989.18 and 240,449.60 is: 359,141.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,788.90 : 396,989.18 = 240,449.60 : x
  2. Step 2: Convert to fraction form
    265,788.90/396,989.18 = 240,449.60/x
  3. Step 3: Cross multiply
    265,788.90x = 396,989.18 × 240,449.60
  4. Step 4: Simplify right side
    265,788.90x = 95,455,890,133.91
  5. Step 5: Solve for x
    x = 95,455,890,133.91/265,788.90
  6. Step 6: Final answer
    x = 359,141.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.