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Finding the Fourth Proportional to 330,620.20, 456,256.17 and 179,717.20

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Solution

The fourth proportional to 330,620.20, 456,256.17 and 179,717.20 is: 248,009.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,620.20 : 456,256.17 = 179,717.20 : x
  2. Step 2: Convert to fraction form
    330,620.20/456,256.17 = 179,717.20/x
  3. Step 3: Cross multiply
    330,620.20x = 456,256.17 × 179,717.20
  4. Step 4: Simplify right side
    330,620.20x = 81,997,081,355.12
  5. Step 5: Solve for x
    x = 81,997,081,355.12/330,620.20
  6. Step 6: Final answer
    x = 248,009.90

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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.