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Finding the Fourth Proportional to 355,514.52, 490,617.78 and 212,247.81

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Solution

The fourth proportional to 355,514.52, 490,617.78 and 212,247.81 is: 292,906.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,514.52 : 490,617.78 = 212,247.81 : x
  2. Step 2: Convert to fraction form
    355,514.52/490,617.78 = 212,247.81/x
  3. Step 3: Cross multiply
    355,514.52x = 490,617.78 × 212,247.81
  4. Step 4: Simplify right side
    355,514.52x = 104,132,549,352.06
  5. Step 5: Solve for x
    x = 104,132,549,352.06/355,514.52
  6. Step 6: Final answer
    x = 292,906.60

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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.