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Finding the Fourth Proportional to 280,808.20, 421,212.30 and 168,833.80

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Solution

The fourth proportional to 280,808.20, 421,212.30 and 168,833.80 is: 253,250.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,808.20 : 421,212.30 = 168,833.80 : x
  2. Step 2: Convert to fraction form
    280,808.20/421,212.30 = 168,833.80/x
  3. Step 3: Cross multiply
    280,808.20x = 421,212.30 × 168,833.80
  4. Step 4: Simplify right side
    280,808.20x = 71,114,873,215.74
  5. Step 5: Solve for x
    x = 71,114,873,215.74/280,808.20
  6. Step 6: Final answer
    x = 253,250.70

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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.