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Finding the Fourth Proportional to 269,696.40, 404,544.60 and 145,280.40

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Solution

The fourth proportional to 269,696.40, 404,544.60 and 145,280.40 is: 217,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,696.40 : 404,544.60 = 145,280.40 : x
  2. Step 2: Convert to fraction form
    269,696.40/404,544.60 = 145,280.40/x
  3. Step 3: Cross multiply
    269,696.40x = 404,544.60 × 145,280.40
  4. Step 4: Simplify right side
    269,696.40x = 58,772,401,305.84
  5. Step 5: Solve for x
    x = 58,772,401,305.84/269,696.40
  6. Step 6: Final answer
    x = 217,920.60

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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.