Home / 280,244.91-420,434.06-90,705.27

Finding the Fourth Proportional to 280,244.91, 420,434.06 and 90,705.27

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Solution

The fourth proportional to 280,244.91, 420,434.06 and 90,705.27 is: 136,079.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,244.91 : 420,434.06 = 90,705.27 : x
  2. Step 2: Convert to fraction form
    280,244.91/420,434.06 = 90,705.27/x
  3. Step 3: Cross multiply
    280,244.91x = 420,434.06 × 90,705.27
  4. Step 4: Simplify right side
    280,244.91x = 38,135,584,475.97
  5. Step 5: Solve for x
    x = 38,135,584,475.97/280,244.91
  6. Step 6: Final answer
    x = 136,079.49

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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.