Home / 280,236.24-420,350.28-130,392.72

Finding the Fourth Proportional to 280,236.24, 420,350.28 and 130,392.72

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Solution

The fourth proportional to 280,236.24, 420,350.28 and 130,392.72 is: 195,587.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,236.24 : 420,350.28 = 130,392.72 : x
  2. Step 2: Convert to fraction form
    280,236.24/420,350.28 = 130,392.72/x
  3. Step 3: Cross multiply
    280,236.24x = 420,350.28 × 130,392.72
  4. Step 4: Simplify right side
    280,236.24x = 54,810,616,361.96
  5. Step 5: Solve for x
    x = 54,810,616,361.96/280,236.24
  6. Step 6: Final answer
    x = 195,587.18

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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.