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Finding the Fourth Proportional to 243,138.80, 364,549.80 and 218,255.60

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Solution

The fourth proportional to 243,138.80, 364,549.80 and 218,255.60 is: 327,241.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,138.80 : 364,549.80 = 218,255.60 : x
  2. Step 2: Convert to fraction form
    243,138.80/364,549.80 = 218,255.60/x
  3. Step 3: Cross multiply
    243,138.80x = 364,549.80 × 218,255.60
  4. Step 4: Simplify right side
    243,138.80x = 79,565,035,328.88
  5. Step 5: Solve for x
    x = 79,565,035,328.88/243,138.80
  6. Step 6: Final answer
    x = 327,241.21

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1.5x scale

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.