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Finding the Fourth Proportional to 453,221.44, 679,663.20 and 133,287.60

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Solution

The fourth proportional to 453,221.44, 679,663.20 and 133,287.60 is: 199,881.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,221.44 : 679,663.20 = 133,287.60 : x
  2. Step 2: Convert to fraction form
    453,221.44/679,663.20 = 133,287.60/x
  3. Step 3: Cross multiply
    453,221.44x = 679,663.20 × 133,287.60
  4. Step 4: Simplify right side
    453,221.44x = 90,590,676,736.32
  5. Step 5: Solve for x
    x = 90,590,676,736.32/453,221.44
  6. Step 6: Final answer
    x = 199,881.71

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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.