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Finding the Fourth Proportional to 243,622.80, 365,185.08 and 138,219.12

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Solution

The fourth proportional to 243,622.80, 365,185.08 and 138,219.12 is: 207,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,622.80 : 365,185.08 = 138,219.12 : x
  2. Step 2: Convert to fraction form
    243,622.80/365,185.08 = 138,219.12/x
  3. Step 3: Cross multiply
    243,622.80x = 365,185.08 × 138,219.12
  4. Step 4: Simplify right side
    243,622.80x = 50,475,560,394.73
  5. Step 5: Solve for x
    x = 50,475,560,394.73/243,622.80
  6. Step 6: Final answer
    x = 207,187.34

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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.