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Finding the Fourth Proportional to 453,987.41, 680,979.30 and 138,443.41

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Solution

The fourth proportional to 453,987.41, 680,979.30 and 138,443.41 is: 207,664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,987.41 : 680,979.30 = 138,443.41 : x
  2. Step 2: Convert to fraction form
    453,987.41/680,979.30 = 138,443.41/x
  3. Step 3: Cross multiply
    453,987.41x = 680,979.30 × 138,443.41
  4. Step 4: Simplify right side
    453,987.41x = 94,277,096,431.41
  5. Step 5: Solve for x
    x = 94,277,096,431.41/453,987.41
  6. Step 6: Final answer
    x = 207,664.56

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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.