Home / 280,286.48-387,015.74-225,665.15

Finding the Fourth Proportional to 280,286.48, 387,015.74 and 225,665.15

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Solution

The fourth proportional to 280,286.48, 387,015.74 and 225,665.15 is: 311,595.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,286.48 : 387,015.74 = 225,665.15 : x
  2. Step 2: Convert to fraction form
    280,286.48/387,015.74 = 225,665.15/x
  3. Step 3: Cross multiply
    280,286.48x = 387,015.74 × 225,665.15
  4. Step 4: Simplify right side
    280,286.48x = 87,335,961,956.06
  5. Step 5: Solve for x
    x = 87,335,961,956.06/280,286.48
  6. Step 6: Final answer
    x = 311,595.34

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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.