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Finding the Fourth Proportional to 347,911.60, 522,040.20 and 137,556.40

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Solution

The fourth proportional to 347,911.60, 522,040.20 and 137,556.40 is: 206,402.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,911.60 : 522,040.20 = 137,556.40 : x
  2. Step 2: Convert to fraction form
    347,911.60/522,040.20 = 137,556.40/x
  3. Step 3: Cross multiply
    347,911.60x = 522,040.20 × 137,556.40
  4. Step 4: Simplify right side
    347,911.60x = 71,809,970,567.28
  5. Step 5: Solve for x
    x = 71,809,970,567.28/347,911.60
  6. Step 6: Final answer
    x = 206,402.92

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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.