Home / 280,084.20-420,126.30-230,876.70

Finding the Fourth Proportional to 280,084.20, 420,126.30 and 230,876.70

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Solution

The fourth proportional to 280,084.20, 420,126.30 and 230,876.70 is: 346,315.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,084.20 : 420,126.30 = 230,876.70 : x
  2. Step 2: Convert to fraction form
    280,084.20/420,126.30 = 230,876.70/x
  3. Step 3: Cross multiply
    280,084.20x = 420,126.30 × 230,876.70
  4. Step 4: Simplify right side
    280,084.20x = 96,997,373,727.21
  5. Step 5: Solve for x
    x = 96,997,373,727.21/280,084.20
  6. Step 6: Final answer
    x = 346,315.05

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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.