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Finding the Fourth Proportional to 269,487.80, 404,231.70 and 256,365.80

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Solution

The fourth proportional to 269,487.80, 404,231.70 and 256,365.80 is: 384,548.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,487.80 : 404,231.70 = 256,365.80 : x
  2. Step 2: Convert to fraction form
    269,487.80/404,231.70 = 256,365.80/x
  3. Step 3: Cross multiply
    269,487.80x = 404,231.70 × 256,365.80
  4. Step 4: Simplify right side
    269,487.80x = 103,631,183,155.86
  5. Step 5: Solve for x
    x = 103,631,183,155.86/269,487.80
  6. Step 6: Final answer
    x = 384,548.70

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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.