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Finding the Fourth Proportional to 269,554.40, 404,331.60 and 145,138.40

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Solution

The fourth proportional to 269,554.40, 404,331.60 and 145,138.40 is: 217,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,554.40 : 404,331.60 = 145,138.40 : x
  2. Step 2: Convert to fraction form
    269,554.40/404,331.60 = 145,138.40/x
  3. Step 3: Cross multiply
    269,554.40x = 404,331.60 × 145,138.40
  4. Step 4: Simplify right side
    269,554.40x = 58,684,041,493.44
  5. Step 5: Solve for x
    x = 58,684,041,493.44/269,554.40
  6. Step 6: Final answer
    x = 217,707.60

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1.5x scale

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.