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Finding the Fourth Proportional to 388,351.71, 582,332.75 and 226,298.25

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Solution

The fourth proportional to 388,351.71, 582,332.75 and 226,298.25 is: 339,333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,351.71 : 582,332.75 = 226,298.25 : x
  2. Step 2: Convert to fraction form
    388,351.71/582,332.75 = 226,298.25/x
  3. Step 3: Cross multiply
    388,351.71x = 582,332.75 × 226,298.25
  4. Step 4: Simplify right side
    388,351.71x = 131,780,881,111.20
  5. Step 5: Solve for x
    x = 131,780,881,111.20/388,351.71
  6. Step 6: Final answer
    x = 339,333.85

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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.