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Finding the Fourth Proportional to 418,221.60, 577,132.96 and 227,230.88

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Solution

The fourth proportional to 418,221.60, 577,132.96 and 227,230.88 is: 313,571.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,221.60 : 577,132.96 = 227,230.88 : x
  2. Step 2: Convert to fraction form
    418,221.60/577,132.96 = 227,230.88/x
  3. Step 3: Cross multiply
    418,221.60x = 577,132.96 × 227,230.88
  4. Step 4: Simplify right side
    418,221.60x = 131,142,430,377.81
  5. Step 5: Solve for x
    x = 131,142,430,377.81/418,221.60
  6. Step 6: Final answer
    x = 313,571.63

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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.