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Finding the Fourth Proportional to 425,501.54, 638,346.93 and 185,654.33

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Solution

The fourth proportional to 425,501.54, 638,346.93 and 185,654.33 is: 278,522.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,501.54 : 638,346.93 = 185,654.33 : x
  2. Step 2: Convert to fraction form
    425,501.54/638,346.93 = 185,654.33/x
  3. Step 3: Cross multiply
    425,501.54x = 638,346.93 × 185,654.33
  4. Step 4: Simplify right side
    425,501.54x = 118,511,870,102.57
  5. Step 5: Solve for x
    x = 118,511,870,102.57/425,501.54
  6. Step 6: Final answer
    x = 278,522.78

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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.