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Finding the Fourth Proportional to 223,953.71, 335,141.56 and 139,753.49

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Solution

The fourth proportional to 223,953.71, 335,141.56 and 139,753.49 is: 209,137.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,953.71 : 335,141.56 = 139,753.49 : x
  2. Step 2: Convert to fraction form
    223,953.71/335,141.56 = 139,753.49/x
  3. Step 3: Cross multiply
    223,953.71x = 335,141.56 × 139,753.49
  4. Step 4: Simplify right side
    223,953.71x = 46,837,203,142.51
  5. Step 5: Solve for x
    x = 46,837,203,142.51/223,953.71
  6. Step 6: Final answer
    x = 209,137.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.