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Finding the Fourth Proportional to 223,689.12, 308,573.36 and 132,980.57

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Solution

The fourth proportional to 223,689.12, 308,573.36 and 132,980.57 is: 183,443.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,689.12 : 308,573.36 = 132,980.57 : x
  2. Step 2: Convert to fraction form
    223,689.12/308,573.36 = 132,980.57/x
  3. Step 3: Cross multiply
    223,689.12x = 308,573.36 × 132,980.57
  4. Step 4: Simplify right side
    223,689.12x = 41,034,259,091.85
  5. Step 5: Solve for x
    x = 41,034,259,091.85/223,689.12
  6. Step 6: Final answer
    x = 183,443.25

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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.