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Finding the Fourth Proportional to 243,117.80, 364,518.30 and 218,234.60

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Solution

The fourth proportional to 243,117.80, 364,518.30 and 218,234.60 is: 327,209.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,117.80 : 364,518.30 = 218,234.60 : x
  2. Step 2: Convert to fraction form
    243,117.80/364,518.30 = 218,234.60/x
  3. Step 3: Cross multiply
    243,117.80x = 364,518.30 × 218,234.60
  4. Step 4: Simplify right side
    243,117.80x = 79,550,505,393.18
  5. Step 5: Solve for x
    x = 79,550,505,393.18/243,117.80
  6. Step 6: Final answer
    x = 327,209.71

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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.