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Finding the Fourth Proportional to 366,031.48, 505,128.60 and 210,897.03

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Solution

The fourth proportional to 366,031.48, 505,128.60 and 210,897.03 is: 291,040.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,031.48 : 505,128.60 = 210,897.03 : x
  2. Step 2: Convert to fraction form
    366,031.48/505,128.60 = 210,897.03/x
  3. Step 3: Cross multiply
    366,031.48x = 505,128.60 × 210,897.03
  4. Step 4: Simplify right side
    366,031.48x = 106,530,120,453.57
  5. Step 5: Solve for x
    x = 106,530,120,453.57/366,031.48
  6. Step 6: Final answer
    x = 291,040.87

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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.