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Finding the Fourth Proportional to 269,521.80, 404,282.70 and 256,399.80

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Solution

The fourth proportional to 269,521.80, 404,282.70 and 256,399.80 is: 384,599.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,521.80 : 404,282.70 = 256,399.80 : x
  2. Step 2: Convert to fraction form
    269,521.80/404,282.70 = 256,399.80/x
  3. Step 3: Cross multiply
    269,521.80x = 404,282.70 × 256,399.80
  4. Step 4: Simplify right side
    269,521.80x = 103,658,003,423.46
  5. Step 5: Solve for x
    x = 103,658,003,423.46/269,521.80
  6. Step 6: Final answer
    x = 384,599.70

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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.