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Finding the Fourth Proportional to 300,118.80, 414,199.68 and 172,819.20

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Solution

The fourth proportional to 300,118.80, 414,199.68 and 172,819.20 is: 238,511.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,118.80 : 414,199.68 = 172,819.20 : x
  2. Step 2: Convert to fraction form
    300,118.80/414,199.68 = 172,819.20/x
  3. Step 3: Cross multiply
    300,118.80x = 414,199.68 × 172,819.20
  4. Step 4: Simplify right side
    300,118.80x = 71,581,657,337.86
  5. Step 5: Solve for x
    x = 71,581,657,337.86/300,118.80
  6. Step 6: Final answer
    x = 238,511.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.