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Finding the Fourth Proportional to 354,540.48, 489,272.70 and 193,401.44

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Solution

The fourth proportional to 354,540.48, 489,272.70 and 193,401.44 is: 266,897.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,540.48 : 489,272.70 = 193,401.44 : x
  2. Step 2: Convert to fraction form
    354,540.48/489,272.70 = 193,401.44/x
  3. Step 3: Cross multiply
    354,540.48x = 489,272.70 × 193,401.44
  4. Step 4: Simplify right side
    354,540.48x = 94,626,044,732.69
  5. Step 5: Solve for x
    x = 94,626,044,732.69/354,540.48
  6. Step 6: Final answer
    x = 266,897.72

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1.5x scale

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.