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Finding the Fourth Proportional to 243,116.80, 364,516.80 and 218,233.60

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Solution

The fourth proportional to 243,116.80, 364,516.80 and 218,233.60 is: 327,208.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,116.80 : 364,516.80 = 218,233.60 : x
  2. Step 2: Convert to fraction form
    243,116.80/364,516.80 = 218,233.60/x
  3. Step 3: Cross multiply
    243,116.80x = 364,516.80 × 218,233.60
  4. Step 4: Simplify right side
    243,116.80x = 79,549,813,524.48
  5. Step 5: Solve for x
    x = 79,549,813,524.48/243,116.80
  6. Step 6: Final answer
    x = 327,208.21

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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.