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Finding the Fourth Proportional to 330,940.80, 496,436.16 and 103,207.68

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Solution

The fourth proportional to 330,940.80, 496,436.16 and 103,207.68 is: 154,819.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,940.80 : 496,436.16 = 103,207.68 : x
  2. Step 2: Convert to fraction form
    330,940.80/496,436.16 = 103,207.68/x
  3. Step 3: Cross multiply
    330,940.80x = 496,436.16 × 103,207.68
  4. Step 4: Simplify right side
    330,940.80x = 51,236,024,341.71
  5. Step 5: Solve for x
    x = 51,236,024,341.71/330,940.80
  6. Step 6: Final answer
    x = 154,819.30

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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.