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Finding the Fourth Proportional to 200,520.79, 300,782.89 and 160,440.45

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Solution

The fourth proportional to 200,520.79, 300,782.89 and 160,440.45 is: 240,662.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,520.79 : 300,782.89 = 160,440.45 : x
  2. Step 2: Convert to fraction form
    200,520.79/300,782.89 = 160,440.45/x
  3. Step 3: Cross multiply
    200,520.79x = 300,782.89 × 160,440.45
  4. Step 4: Simplify right side
    200,520.79x = 48,257,741,747.75
  5. Step 5: Solve for x
    x = 48,257,741,747.75/200,520.79
  6. Step 6: Final answer
    x = 240,662.04

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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.