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Finding the Fourth Proportional to 243,999.90, 365,989.07 and 66,506.90

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Solution

The fourth proportional to 243,999.90, 365,989.07 and 66,506.90 is: 99,757.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,999.90 : 365,989.07 = 66,506.90 : x
  2. Step 2: Convert to fraction form
    243,999.90/365,989.07 = 66,506.90/x
  3. Step 3: Cross multiply
    243,999.90x = 365,989.07 × 66,506.90
  4. Step 4: Simplify right side
    243,999.90x = 24,340,796,815.90
  5. Step 5: Solve for x
    x = 24,340,796,815.90/243,999.90
  6. Step 6: Final answer
    x = 99,757.40

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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.