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Finding the Fourth Proportional to 384,499.20, 576,441.60 and 162,700.80

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Solution

The fourth proportional to 384,499.20, 576,441.60 and 162,700.80 is: 243,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,499.20 : 576,441.60 = 162,700.80 : x
  2. Step 2: Convert to fraction form
    384,499.20/576,441.60 = 162,700.80/x
  3. Step 3: Cross multiply
    384,499.20x = 576,441.60 × 162,700.80
  4. Step 4: Simplify right side
    384,499.20x = 93,787,509,473.28
  5. Step 5: Solve for x
    x = 93,787,509,473.28/384,499.20
  6. Step 6: Final answer
    x = 243,921.21

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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.