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Finding the Fourth Proportional to 223,566.12, 308,652.66 and 138,729.96

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Solution

The fourth proportional to 223,566.12, 308,652.66 and 138,729.96 is: 191,528.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,566.12 : 308,652.66 = 138,729.96 : x
  2. Step 2: Convert to fraction form
    223,566.12/308,652.66 = 138,729.96/x
  3. Step 3: Cross multiply
    223,566.12x = 308,652.66 × 138,729.96
  4. Step 4: Simplify right side
    223,566.12x = 42,819,371,175.69
  5. Step 5: Solve for x
    x = 42,819,371,175.69/223,566.12
  6. Step 6: Final answer
    x = 191,528.89

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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.