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Finding the Fourth Proportional to 330,355.70, 495,533.55 and 143,367.20

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Solution

The fourth proportional to 330,355.70, 495,533.55 and 143,367.20 is: 215,050.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,355.70 : 495,533.55 = 143,367.20 : x
  2. Step 2: Convert to fraction form
    330,355.70/495,533.55 = 143,367.20/x
  3. Step 3: Cross multiply
    330,355.70x = 495,533.55 × 143,367.20
  4. Step 4: Simplify right side
    330,355.70x = 71,043,257,569.56
  5. Step 5: Solve for x
    x = 71,043,257,569.56/330,355.70
  6. Step 6: Final answer
    x = 215,050.80

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1.5x scale

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.