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Finding the Fourth Proportional to 388,513.68, 582,770.52 and 188,662.79

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Solution

The fourth proportional to 388,513.68, 582,770.52 and 188,662.79 is: 282,994.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,513.68 : 582,770.52 = 188,662.79 : x
  2. Step 2: Convert to fraction form
    388,513.68/582,770.52 = 188,662.79/x
  3. Step 3: Cross multiply
    388,513.68x = 582,770.52 × 188,662.79
  4. Step 4: Simplify right side
    388,513.68x = 109,947,109,319.10
  5. Step 5: Solve for x
    x = 109,947,109,319.10/388,513.68
  6. Step 6: Final answer
    x = 282,994.18

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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.