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Finding the Fourth Proportional to 347,321.60, 521,155.20 and 197,676.80

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Solution

The fourth proportional to 347,321.60, 521,155.20 and 197,676.80 is: 296,613.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,321.60 : 521,155.20 = 197,676.80 : x
  2. Step 2: Convert to fraction form
    347,321.60/521,155.20 = 197,676.80/x
  3. Step 3: Cross multiply
    347,321.60x = 521,155.20 × 197,676.80
  4. Step 4: Simplify right side
    347,321.60x = 103,020,292,239.36
  5. Step 5: Solve for x
    x = 103,020,292,239.36/347,321.60
  6. Step 6: Final answer
    x = 296,613.55

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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.