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Finding the Fourth Proportional to 243,069.20, 364,603.80 and 219,741.20

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Solution

The fourth proportional to 243,069.20, 364,603.80 and 219,741.20 is: 329,611.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,069.20 : 364,603.80 = 219,741.20 : x
  2. Step 2: Convert to fraction form
    243,069.20/364,603.80 = 219,741.20/x
  3. Step 3: Cross multiply
    243,069.20x = 364,603.80 × 219,741.20
  4. Step 4: Simplify right side
    243,069.20x = 80,118,476,536.56
  5. Step 5: Solve for x
    x = 80,118,476,536.56/243,069.20
  6. Step 6: Final answer
    x = 329,611.80

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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.