Home / 280,551.42-420,886.32-90,997.07

Finding the Fourth Proportional to 280,551.42, 420,886.32 and 90,997.07

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Solution

The fourth proportional to 280,551.42, 420,886.32 and 90,997.07 is: 136,514.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,551.42 : 420,886.32 = 90,997.07 : x
  2. Step 2: Convert to fraction form
    280,551.42/420,886.32 = 90,997.07/x
  3. Step 3: Cross multiply
    280,551.42x = 420,886.32 × 90,997.07
  4. Step 4: Simplify right side
    280,551.42x = 38,299,419,477.41
  5. Step 5: Solve for x
    x = 38,299,419,477.41/280,551.42
  6. Step 6: Final answer
    x = 136,514.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.