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Finding the Fourth Proportional to 379,439.64, 564,930.45 and 374,141.43

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Solution

The fourth proportional to 379,439.64, 564,930.45 and 374,141.43 is: 557,042.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,439.64 : 564,930.45 = 374,141.43 : x
  2. Step 2: Convert to fraction form
    379,439.64/564,930.45 = 374,141.43/x
  3. Step 3: Cross multiply
    379,439.64x = 564,930.45 × 374,141.43
  4. Step 4: Simplify right side
    379,439.64x = 211,363,886,413.54
  5. Step 5: Solve for x
    x = 211,363,886,413.54/379,439.64
  6. Step 6: Final answer
    x = 557,042.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.