Home / 280,313.70-420,470.55-231,106.20

Finding the Fourth Proportional to 280,313.70, 420,470.55 and 231,106.20

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Solution

The fourth proportional to 280,313.70, 420,470.55 and 231,106.20 is: 346,659.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,313.70 : 420,470.55 = 231,106.20 : x
  2. Step 2: Convert to fraction form
    280,313.70/420,470.55 = 231,106.20/x
  3. Step 3: Cross multiply
    280,313.70x = 420,470.55 × 231,106.20
  4. Step 4: Simplify right side
    280,313.70x = 97,173,351,022.41
  5. Step 5: Solve for x
    x = 97,173,351,022.41/280,313.70
  6. Step 6: Final answer
    x = 346,659.30

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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.