Home / 354,518.27-489,236.75-193,376.78

Finding the Fourth Proportional to 354,518.27, 489,236.75 and 193,376.78

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Solution

The fourth proportional to 354,518.27, 489,236.75 and 193,376.78 is: 266,860.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,518.27 : 489,236.75 = 193,376.78 : x
  2. Step 2: Convert to fraction form
    354,518.27/489,236.75 = 193,376.78/x
  3. Step 3: Cross multiply
    354,518.27x = 489,236.75 × 193,376.78
  4. Step 4: Simplify right side
    354,518.27x = 94,607,023,959.60
  5. Step 5: Solve for x
    x = 94,607,023,959.60/354,518.27
  6. Step 6: Final answer
    x = 266,860.79

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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.