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Finding the Fourth Proportional to 425,358.02, 638,331.71 and 169,164.33

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Solution

The fourth proportional to 425,358.02, 638,331.71 and 169,164.33 is: 253,863.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,358.02 : 638,331.71 = 169,164.33 : x
  2. Step 2: Convert to fraction form
    425,358.02/638,331.71 = 169,164.33/x
  3. Step 3: Cross multiply
    425,358.02x = 638,331.71 × 169,164.33
  4. Step 4: Simplify right side
    425,358.02x = 107,982,955,194.08
  5. Step 5: Solve for x
    x = 107,982,955,194.08/425,358.02
  6. Step 6: Final answer
    x = 253,863.69

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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.