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Finding the Fourth Proportional to 347,708.80, 521,563.20 and 268,879.60

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Solution

The fourth proportional to 347,708.80, 521,563.20 and 268,879.60 is: 403,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,708.80 : 521,563.20 = 268,879.60 : x
  2. Step 2: Convert to fraction form
    347,708.80/521,563.20 = 268,879.60/x
  3. Step 3: Cross multiply
    347,708.80x = 521,563.20 × 268,879.60
  4. Step 4: Simplify right side
    347,708.80x = 140,237,704,590.72
  5. Step 5: Solve for x
    x = 140,237,704,590.72/347,708.80
  6. Step 6: Final answer
    x = 403,319.40

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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.