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Finding the Fourth Proportional to 418,376.28, 577,361.34 and 227,393.40

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Solution

The fourth proportional to 418,376.28, 577,361.34 and 227,393.40 is: 313,804.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,376.28 : 577,361.34 = 227,393.40 : x
  2. Step 2: Convert to fraction form
    418,376.28/577,361.34 = 227,393.40/x
  3. Step 3: Cross multiply
    418,376.28x = 577,361.34 × 227,393.40
  4. Step 4: Simplify right side
    418,376.28x = 131,288,158,131.16
  5. Step 5: Solve for x
    x = 131,288,158,131.16/418,376.28
  6. Step 6: Final answer
    x = 313,804.02

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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.