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Finding the Fourth Proportional to 418,220.58, 577,131.57 and 227,229.87

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Solution

The fourth proportional to 418,220.58, 577,131.57 and 227,229.87 is: 313,570.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,220.58 : 577,131.57 = 227,229.87 : x
  2. Step 2: Convert to fraction form
    418,220.58/577,131.57 = 227,229.87/x
  3. Step 3: Cross multiply
    418,220.58x = 577,131.57 × 227,229.87
  4. Step 4: Simplify right side
    418,220.58x = 131,141,531,624.00
  5. Step 5: Solve for x
    x = 131,141,531,624.00/418,220.58
  6. Step 6: Final answer
    x = 313,570.25

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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.