Home / 287,777.12-397,660.52-273,949.88

Finding the Fourth Proportional to 287,777.12, 397,660.52 and 273,949.88

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Solution

The fourth proportional to 287,777.12, 397,660.52 and 273,949.88 is: 378,553.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,777.12 : 397,660.52 = 273,949.88 : x
  2. Step 2: Convert to fraction form
    287,777.12/397,660.52 = 273,949.88/x
  3. Step 3: Cross multiply
    287,777.12x = 397,660.52 × 273,949.88
  4. Step 4: Simplify right side
    287,777.12x = 108,939,051,734.74
  5. Step 5: Solve for x
    x = 108,939,051,734.74/287,777.12
  6. Step 6: Final answer
    x = 378,553.55

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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.