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Finding the Fourth Proportional to 321,460.52, 443,620.61 and 176,279.51

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Solution

The fourth proportional to 321,460.52, 443,620.61 and 176,279.51 is: 243,268.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,460.52 : 443,620.61 = 176,279.51 : x
  2. Step 2: Convert to fraction form
    321,460.52/443,620.61 = 176,279.51/x
  3. Step 3: Cross multiply
    321,460.52x = 443,620.61 × 176,279.51
  4. Step 4: Simplify right side
    321,460.52x = 78,201,220,657.20
  5. Step 5: Solve for x
    x = 78,201,220,657.20/321,460.52
  6. Step 6: Final answer
    x = 243,268.51

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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.