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Finding the Fourth Proportional to 218,891.55, 302,044.62 and 123,392.55

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Solution

The fourth proportional to 218,891.55, 302,044.62 and 123,392.55 is: 170,267.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,891.55 : 302,044.62 = 123,392.55 : x
  2. Step 2: Convert to fraction form
    218,891.55/302,044.62 = 123,392.55/x
  3. Step 3: Cross multiply
    218,891.55x = 302,044.62 × 123,392.55
  4. Step 4: Simplify right side
    218,891.55x = 37,270,055,875.58
  5. Step 5: Solve for x
    x = 37,270,055,875.58/218,891.55
  6. Step 6: Final answer
    x = 170,267.22

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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.