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Finding the Fourth Proportional to 330,212.80, 495,319.20 and 119,823.40

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Solution

The fourth proportional to 330,212.80, 495,319.20 and 119,823.40 is: 179,735.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,212.80 : 495,319.20 = 119,823.40 : x
  2. Step 2: Convert to fraction form
    330,212.80/495,319.20 = 119,823.40/x
  3. Step 3: Cross multiply
    330,212.80x = 495,319.20 × 119,823.40
  4. Step 4: Simplify right side
    330,212.80x = 59,350,830,629.28
  5. Step 5: Solve for x
    x = 59,350,830,629.28/330,212.80
  6. Step 6: Final answer
    x = 179,735.10

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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.