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Finding the Fourth Proportional to 354,527.76, 489,428.88 and 273,774

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Solution

The fourth proportional to 354,527.76, 489,428.88 and 273,774 is: 377,947.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,527.76 : 489,428.88 = 273,774 : x
  2. Step 2: Convert to fraction form
    354,527.76/489,428.88 = 273,774/x
  3. Step 3: Cross multiply
    354,527.76x = 489,428.88 × 273,774
  4. Step 4: Simplify right side
    354,527.76x = 133,992,902,193.12
  5. Step 5: Solve for x
    x = 133,992,902,193.12/354,527.76
  6. Step 6: Final answer
    x = 377,947.56

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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.