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Finding the Fourth Proportional to 324,076.60, 485,969.10 and 124,330.60

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Solution

The fourth proportional to 324,076.60, 485,969.10 and 124,330.60 is: 186,439.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,076.60 : 485,969.10 = 124,330.60 : x
  2. Step 2: Convert to fraction form
    324,076.60/485,969.10 = 124,330.60/x
  3. Step 3: Cross multiply
    324,076.60x = 485,969.10 × 124,330.60
  4. Step 4: Simplify right side
    324,076.60x = 60,420,829,784.46
  5. Step 5: Solve for x
    x = 60,420,829,784.46/324,076.60
  6. Step 6: Final answer
    x = 186,439.96

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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.