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Finding the Fourth Proportional to 375,028.44, 562,391.34 and 138,318.48

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Solution

The fourth proportional to 375,028.44, 562,391.34 and 138,318.48 is: 207,421.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,028.44 : 562,391.34 = 138,318.48 : x
  2. Step 2: Convert to fraction form
    375,028.44/562,391.34 = 138,318.48/x
  3. Step 3: Cross multiply
    375,028.44x = 562,391.34 × 138,318.48
  4. Step 4: Simplify right side
    375,028.44x = 77,789,115,313.96
  5. Step 5: Solve for x
    x = 77,789,115,313.96/375,028.44
  6. Step 6: Final answer
    x = 207,421.91

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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.