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Finding the Fourth Proportional to 388,516.60, 582,429.30 and 230,577.40

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Solution

The fourth proportional to 388,516.60, 582,429.30 and 230,577.40 is: 345,660.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,516.60 : 582,429.30 = 230,577.40 : x
  2. Step 2: Convert to fraction form
    388,516.60/582,429.30 = 230,577.40/x
  3. Step 3: Cross multiply
    388,516.60x = 582,429.30 × 230,577.40
  4. Step 4: Simplify right side
    388,516.60x = 134,295,033,677.82
  5. Step 5: Solve for x
    x = 134,295,033,677.82/388,516.60
  6. Step 6: Final answer
    x = 345,660.99

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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.