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Finding the Fourth Proportional to 243,391.50, 335,662.08 and 202,690.42

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Solution

The fourth proportional to 243,391.50, 335,662.08 and 202,690.42 is: 279,531.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,391.50 : 335,662.08 = 202,690.42 : x
  2. Step 2: Convert to fraction form
    243,391.50/335,662.08 = 202,690.42/x
  3. Step 3: Cross multiply
    243,391.50x = 335,662.08 × 202,690.42
  4. Step 4: Simplify right side
    243,391.50x = 68,035,486,374.03
  5. Step 5: Solve for x
    x = 68,035,486,374.03/243,391.50
  6. Step 6: Final answer
    x = 279,531.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.