Home / 280,314.20-420,471.30-231,106.70

Finding the Fourth Proportional to 280,314.20, 420,471.30 and 231,106.70

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Solution

The fourth proportional to 280,314.20, 420,471.30 and 231,106.70 is: 346,660.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,314.20 : 420,471.30 = 231,106.70 : x
  2. Step 2: Convert to fraction form
    280,314.20/420,471.30 = 231,106.70/x
  3. Step 3: Cross multiply
    280,314.20x = 420,471.30 × 231,106.70
  4. Step 4: Simplify right side
    280,314.20x = 97,173,734,587.71
  5. Step 5: Solve for x
    x = 97,173,734,587.71/280,314.20
  6. Step 6: Final answer
    x = 346,660.05

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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.