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Finding the Fourth Proportional to 330,071.58, 495,171.02 and 140,528.48

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Solution

The fourth proportional to 330,071.58, 495,171.02 and 140,528.48 is: 210,819.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,071.58 : 495,171.02 = 140,528.48 : x
  2. Step 2: Convert to fraction form
    330,071.58/495,171.02 = 140,528.48/x
  3. Step 3: Cross multiply
    330,071.58x = 495,171.02 × 140,528.48
  4. Step 4: Simplify right side
    330,071.58x = 69,585,628,656.12
  5. Step 5: Solve for x
    x = 69,585,628,656.12/330,071.58
  6. Step 6: Final answer
    x = 210,819.81

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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.