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Finding the Fourth Proportional to 354,974.40, 489,866.47 and 193,829.45

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Solution

The fourth proportional to 354,974.40, 489,866.47 and 193,829.45 is: 267,485.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,974.40 : 489,866.47 = 193,829.45 : x
  2. Step 2: Convert to fraction form
    354,974.40/489,866.47 = 193,829.45/x
  3. Step 3: Cross multiply
    354,974.40x = 489,866.47 × 193,829.45
  4. Step 4: Simplify right side
    354,974.40x = 94,950,545,519.64
  5. Step 5: Solve for x
    x = 94,950,545,519.64/354,974.40
  6. Step 6: Final answer
    x = 267,485.61

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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.