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Finding the Fourth Proportional to 223,326.76, 308,180.80 and 138,451.72

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Solution

The fourth proportional to 223,326.76, 308,180.80 and 138,451.72 is: 191,057.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,326.76 : 308,180.80 = 138,451.72 : x
  2. Step 2: Convert to fraction form
    223,326.76/308,180.80 = 138,451.72/x
  3. Step 3: Cross multiply
    223,326.76x = 308,180.80 × 138,451.72
  4. Step 4: Simplify right side
    223,326.76x = 42,668,161,830.98
  5. Step 5: Solve for x
    x = 42,668,161,830.98/223,326.76
  6. Step 6: Final answer
    x = 191,057.09

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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.