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Finding the Fourth Proportional to 243,635.80, 365,064.90 and 203,978.20

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Solution

The fourth proportional to 243,635.80, 365,064.90 and 203,978.20 is: 305,641.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,635.80 : 365,064.90 = 203,978.20 : x
  2. Step 2: Convert to fraction form
    243,635.80/365,064.90 = 203,978.20/x
  3. Step 3: Cross multiply
    243,635.80x = 365,064.90 × 203,978.20
  4. Step 4: Simplify right side
    243,635.80x = 74,465,281,185.18
  5. Step 5: Solve for x
    x = 74,465,281,185.18/243,635.80
  6. Step 6: Final answer
    x = 305,641.79

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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.