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Finding the Fourth Proportional to 354,530.48, 489,432.73 and 273,776.72

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Solution

The fourth proportional to 354,530.48, 489,432.73 and 273,776.72 is: 377,951.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,530.48 : 489,432.73 = 273,776.72 : x
  2. Step 2: Convert to fraction form
    354,530.48/489,432.73 = 273,776.72/x
  3. Step 3: Cross multiply
    354,530.48x = 489,432.73 × 273,776.72
  4. Step 4: Simplify right side
    354,530.48x = 133,995,287,480.05
  5. Step 5: Solve for x
    x = 133,995,287,480.05/354,530.48
  6. Step 6: Final answer
    x = 377,951.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.