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Finding the Fourth Proportional to 418,388.38, 577,376.05 and 227,401.80

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Solution

The fourth proportional to 418,388.38, 577,376.05 and 227,401.80 is: 313,814.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,388.38 : 577,376.05 = 227,401.80 : x
  2. Step 2: Convert to fraction form
    418,388.38/577,376.05 = 227,401.80/x
  3. Step 3: Cross multiply
    418,388.38x = 577,376.05 × 227,401.80
  4. Step 4: Simplify right side
    418,388.38x = 131,296,353,046.89
  5. Step 5: Solve for x
    x = 131,296,353,046.89/418,388.38
  6. Step 6: Final answer
    x = 313,814.53

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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.