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Finding the Fourth Proportional to 355,600.40, 489,883.56 and 247,974.80

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Solution

The fourth proportional to 355,600.40, 489,883.56 and 247,974.80 is: 341,615.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,600.40 : 489,883.56 = 247,974.80 : x
  2. Step 2: Convert to fraction form
    355,600.40/489,883.56 = 247,974.80/x
  3. Step 3: Cross multiply
    355,600.40x = 489,883.56 × 247,974.80
  4. Step 4: Simplify right side
    355,600.40x = 121,478,777,814.29
  5. Step 5: Solve for x
    x = 121,478,777,814.29/355,600.40
  6. Step 6: Final answer
    x = 341,615.98

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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.