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Finding the Fourth Proportional to 418,259.39, 577,201.61 and 227,272.78

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Solution

The fourth proportional to 418,259.39, 577,201.61 and 227,272.78 is: 313,638.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,259.39 : 577,201.61 = 227,272.78 : x
  2. Step 2: Convert to fraction form
    418,259.39/577,201.61 = 227,272.78/x
  3. Step 3: Cross multiply
    418,259.39x = 577,201.61 × 227,272.78
  4. Step 4: Simplify right side
    418,259.39x = 131,182,213,650.35
  5. Step 5: Solve for x
    x = 131,182,213,650.35/418,259.39
  6. Step 6: Final answer
    x = 313,638.42

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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.