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Finding the Fourth Proportional to 402,249.78, 555,108.21 and 220,965.39

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Solution

The fourth proportional to 402,249.78, 555,108.21 and 220,965.39 is: 304,934.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,249.78 : 555,108.21 = 220,965.39 : x
  2. Step 2: Convert to fraction form
    402,249.78/555,108.21 = 220,965.39/x
  3. Step 3: Cross multiply
    402,249.78x = 555,108.21 × 220,965.39
  4. Step 4: Simplify right side
    402,249.78x = 122,659,702,114.85
  5. Step 5: Solve for x
    x = 122,659,702,114.85/402,249.78
  6. Step 6: Final answer
    x = 304,934.17

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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.