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Finding the Fourth Proportional to 354,648.81, 489,414.24 and 193,503.63

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Solution

The fourth proportional to 354,648.81, 489,414.24 and 193,503.63 is: 267,034.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,648.81 : 489,414.24 = 193,503.63 : x
  2. Step 2: Convert to fraction form
    354,648.81/489,414.24 = 193,503.63/x
  3. Step 3: Cross multiply
    354,648.81x = 489,414.24 × 193,503.63
  4. Step 4: Simplify right side
    354,648.81x = 94,703,432,013.69
  5. Step 5: Solve for x
    x = 94,703,432,013.69/354,648.81
  6. Step 6: Final answer
    x = 267,034.40

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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.