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Finding the Fourth Proportional to 269,579.80, 404,369.70 and 256,457.80

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Solution

The fourth proportional to 269,579.80, 404,369.70 and 256,457.80 is: 384,686.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,579.80 : 404,369.70 = 256,457.80 : x
  2. Step 2: Convert to fraction form
    269,579.80/404,369.70 = 256,457.80/x
  3. Step 3: Cross multiply
    269,579.80x = 404,369.70 × 256,457.80
  4. Step 4: Simplify right side
    269,579.80x = 103,703,763,648.66
  5. Step 5: Solve for x
    x = 103,703,763,648.66/269,579.80
  6. Step 6: Final answer
    x = 384,686.70

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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.