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Finding the Fourth Proportional to 375,709.61, 518,500.47 and 222,838.31

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Solution

The fourth proportional to 375,709.61, 518,500.47 and 222,838.31 is: 307,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,709.61 : 518,500.47 = 222,838.31 : x
  2. Step 2: Convert to fraction form
    375,709.61/518,500.47 = 222,838.31/x
  3. Step 3: Cross multiply
    375,709.61x = 518,500.47 × 222,838.31
  4. Step 4: Simplify right side
    375,709.61x = 115,541,768,469.01
  5. Step 5: Solve for x
    x = 115,541,768,469.01/375,709.61
  6. Step 6: Final answer
    x = 307,529.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.