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Finding the Fourth Proportional to 354,360.62, 489,006.96 and 193,218.78

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Solution

The fourth proportional to 354,360.62, 489,006.96 and 193,218.78 is: 266,636.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,360.62 : 489,006.96 = 193,218.78 : x
  2. Step 2: Convert to fraction form
    354,360.62/489,006.96 = 193,218.78/x
  3. Step 3: Cross multiply
    354,360.62x = 489,006.96 × 193,218.78
  4. Step 4: Simplify right side
    354,360.62x = 94,485,328,222.71
  5. Step 5: Solve for x
    x = 94,485,328,222.71/354,360.62
  6. Step 6: Final answer
    x = 266,636.08

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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.