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Finding the Fourth Proportional to 381,703.80, 572,555.70 and 269,729.40

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Solution

The fourth proportional to 381,703.80, 572,555.70 and 269,729.40 is: 404,594.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,703.80 : 572,555.70 = 269,729.40 : x
  2. Step 2: Convert to fraction form
    381,703.80/572,555.70 = 269,729.40/x
  3. Step 3: Cross multiply
    381,703.80x = 572,555.70 × 269,729.40
  4. Step 4: Simplify right side
    381,703.80x = 154,435,105,427.58
  5. Step 5: Solve for x
    x = 154,435,105,427.58/381,703.80
  6. Step 6: Final answer
    x = 404,594.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.