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Finding the Fourth Proportional to 418,396.80, 577,388.32 and 227,409.68

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Solution

The fourth proportional to 418,396.80, 577,388.32 and 227,409.68 is: 313,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,396.80 : 577,388.32 = 227,409.68 : x
  2. Step 2: Convert to fraction form
    418,396.80/577,388.32 = 227,409.68/x
  3. Step 3: Cross multiply
    418,396.80x = 577,388.32 × 227,409.68
  4. Step 4: Simplify right side
    418,396.80x = 131,303,693,086.94
  5. Step 5: Solve for x
    x = 131,303,693,086.94/418,396.80
  6. Step 6: Final answer
    x = 313,825.76

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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.