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Finding the Fourth Proportional to 345,760.95, 476,944.49 and 269,158.80

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Solution

The fourth proportional to 345,760.95, 476,944.49 and 269,158.80 is: 371,279.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,760.95 : 476,944.49 = 269,158.80 : x
  2. Step 2: Convert to fraction form
    345,760.95/476,944.49 = 269,158.80/x
  3. Step 3: Cross multiply
    345,760.95x = 476,944.49 × 269,158.80
  4. Step 4: Simplify right side
    345,760.95x = 128,373,805,249.22
  5. Step 5: Solve for x
    x = 128,373,805,249.22/345,760.95
  6. Step 6: Final answer
    x = 371,279.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.