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Finding the Fourth Proportional to 354,370.62, 489,020.76 and 193,228.80

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Solution

The fourth proportional to 354,370.62, 489,020.76 and 193,228.80 is: 266,649.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,370.62 : 489,020.76 = 193,228.80 : x
  2. Step 2: Convert to fraction form
    354,370.62/489,020.76 = 193,228.80/x
  3. Step 3: Cross multiply
    354,370.62x = 489,020.76 × 193,228.80
  4. Step 4: Simplify right side
    354,370.62x = 94,492,894,629.89
  5. Step 5: Solve for x
    x = 94,492,894,629.89/354,370.62
  6. Step 6: Final answer
    x = 266,649.91

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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.