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Finding the Fourth Proportional to 269,513.80, 404,270.70 and 256,391.80

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Solution

The fourth proportional to 269,513.80, 404,270.70 and 256,391.80 is: 384,587.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,513.80 : 404,270.70 = 256,391.80 : x
  2. Step 2: Convert to fraction form
    269,513.80/404,270.70 = 256,391.80/x
  3. Step 3: Cross multiply
    269,513.80x = 404,270.70 × 256,391.80
  4. Step 4: Simplify right side
    269,513.80x = 103,651,692,460.26
  5. Step 5: Solve for x
    x = 103,651,692,460.26/269,513.80
  6. Step 6: Final answer
    x = 384,587.70

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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.