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Finding the Fourth Proportional to 326,230.20, 488,762.10 and 266,743.80

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Solution

The fourth proportional to 326,230.20, 488,762.10 and 266,743.80 is: 399,638.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,230.20 : 488,762.10 = 266,743.80 : x
  2. Step 2: Convert to fraction form
    326,230.20/488,762.10 = 266,743.80/x
  3. Step 3: Cross multiply
    326,230.20x = 488,762.10 × 266,743.80
  4. Step 4: Simplify right side
    326,230.20x = 130,374,259,849.98
  5. Step 5: Solve for x
    x = 130,374,259,849.98/326,230.20
  6. Step 6: Final answer
    x = 399,638.84

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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.