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Finding the Fourth Proportional to 330,687.78, 456,346.89 and 179,784.78

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Solution

The fourth proportional to 330,687.78, 456,346.89 and 179,784.78 is: 248,101.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,687.78 : 456,346.89 = 179,784.78 : x
  2. Step 2: Convert to fraction form
    330,687.78/456,346.89 = 179,784.78/x
  3. Step 3: Cross multiply
    330,687.78x = 456,346.89 × 179,784.78
  4. Step 4: Simplify right side
    330,687.78x = 82,044,225,222.33
  5. Step 5: Solve for x
    x = 82,044,225,222.33/330,687.78
  6. Step 6: Final answer
    x = 248,101.78

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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.