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Finding the Fourth Proportional to 375,031.44, 562,395.78 and 138,321.54

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Solution

The fourth proportional to 375,031.44, 562,395.78 and 138,321.54 is: 207,426.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,031.44 : 562,395.78 = 138,321.54 : x
  2. Step 2: Convert to fraction form
    375,031.44/562,395.78 = 138,321.54/x
  3. Step 3: Cross multiply
    375,031.44x = 562,395.78 × 138,321.54
  4. Step 4: Simplify right side
    375,031.44x = 77,791,450,379.10
  5. Step 5: Solve for x
    x = 77,791,450,379.10/375,031.44
  6. Step 6: Final answer
    x = 207,426.48

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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.