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Finding the Fourth Proportional to 354,563.52, 489,478.16 and 273,809.76

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Solution

The fourth proportional to 354,563.52, 489,478.16 and 273,809.76 is: 377,996.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,563.52 : 489,478.16 = 273,809.76 : x
  2. Step 2: Convert to fraction form
    354,563.52/489,478.16 = 273,809.76/x
  3. Step 3: Cross multiply
    354,563.52x = 489,478.16 × 273,809.76
  4. Step 4: Simplify right side
    354,563.52x = 134,023,897,514.84
  5. Step 5: Solve for x
    x = 134,023,897,514.84/354,563.52
  6. Step 6: Final answer
    x = 377,996.86

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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.