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Finding the Fourth Proportional to 436,121.20, 654,052.20 and 169,728.40

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Solution

The fourth proportional to 436,121.20, 654,052.20 and 169,728.40 is: 254,542.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,121.20 : 654,052.20 = 169,728.40 : x
  2. Step 2: Convert to fraction form
    436,121.20/654,052.20 = 169,728.40/x
  3. Step 3: Cross multiply
    436,121.20x = 654,052.20 × 169,728.40
  4. Step 4: Simplify right side
    436,121.20x = 111,011,233,422.48
  5. Step 5: Solve for x
    x = 111,011,233,422.48/436,121.20
  6. Step 6: Final answer
    x = 254,542.16

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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.