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Finding the Fourth Proportional to 243,880.22, 365,783.40 and 66,401.21

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Solution

The fourth proportional to 243,880.22, 365,783.40 and 66,401.21 is: 99,591.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,880.22 : 365,783.40 = 66,401.21 : x
  2. Step 2: Convert to fraction form
    243,880.22/365,783.40 = 66,401.21/x
  3. Step 3: Cross multiply
    243,880.22x = 365,783.40 × 66,401.21
  4. Step 4: Simplify right side
    243,880.22x = 24,288,461,272.37
  5. Step 5: Solve for x
    x = 24,288,461,272.37/243,880.22
  6. Step 6: Final answer
    x = 99,591.76

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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.