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Finding the Fourth Proportional to 381,157.56, 571,656.15 and 245,816.28

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Solution

The fourth proportional to 381,157.56, 571,656.15 and 245,816.28 is: 368,672.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,157.56 : 571,656.15 = 245,816.28 : x
  2. Step 2: Convert to fraction form
    381,157.56/571,656.15 = 245,816.28/x
  3. Step 3: Cross multiply
    381,157.56x = 571,656.15 × 245,816.28
  4. Step 4: Simplify right side
    381,157.56x = 140,522,388,232.12
  5. Step 5: Solve for x
    x = 140,522,388,232.12/381,157.56
  6. Step 6: Final answer
    x = 368,672.70

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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.