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Finding the Fourth Proportional to 243,730.20, 365,811.30 and 143,765.40

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Solution

The fourth proportional to 243,730.20, 365,811.30 and 143,765.40 is: 215,775.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,730.20 : 365,811.30 = 143,765.40 : x
  2. Step 2: Convert to fraction form
    243,730.20/365,811.30 = 143,765.40/x
  3. Step 3: Cross multiply
    243,730.20x = 365,811.30 × 143,765.40
  4. Step 4: Simplify right side
    243,730.20x = 52,591,007,869.02
  5. Step 5: Solve for x
    x = 52,591,007,869.02/243,730.20
  6. Step 6: Final answer
    x = 215,775.51

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.