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Finding the Fourth Proportional to 334,003.20, 501,004.80 and 81,281.68

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Solution

The fourth proportional to 334,003.20, 501,004.80 and 81,281.68 is: 121,922.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,003.20 : 501,004.80 = 81,281.68 : x
  2. Step 2: Convert to fraction form
    334,003.20/501,004.80 = 81,281.68/x
  3. Step 3: Cross multiply
    334,003.20x = 501,004.80 × 81,281.68
  4. Step 4: Simplify right side
    334,003.20x = 40,722,513,084.58
  5. Step 5: Solve for x
    x = 40,722,513,084.58/334,003.20
  6. Step 6: Final answer
    x = 121,922.52

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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.