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Finding the Fourth Proportional to 418,209.60, 577,127.64 and 227,221.32

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Solution

The fourth proportional to 418,209.60, 577,127.64 and 227,221.32 is: 313,564.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,209.60 : 577,127.64 = 227,221.32 : x
  2. Step 2: Convert to fraction form
    418,209.60/577,127.64 = 227,221.32/x
  3. Step 3: Cross multiply
    418,209.60x = 577,127.64 × 227,221.32
  4. Step 4: Simplify right side
    418,209.60x = 131,135,704,169.29
  5. Step 5: Solve for x
    x = 131,135,704,169.29/418,209.60
  6. Step 6: Final answer
    x = 313,564.55

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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.