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Finding the Fourth Proportional to 243,399.80, 365,237.16 and 131,077.64

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Solution

The fourth proportional to 243,399.80, 365,237.16 and 131,077.64 is: 196,690.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,399.80 : 365,237.16 = 131,077.64 : x
  2. Step 2: Convert to fraction form
    243,399.80/365,237.16 = 131,077.64/x
  3. Step 3: Cross multiply
    243,399.80x = 365,237.16 × 131,077.64
  4. Step 4: Simplify right side
    243,399.80x = 47,874,424,973.10
  5. Step 5: Solve for x
    x = 47,874,424,973.10/243,399.80
  6. Step 6: Final answer
    x = 196,690.49

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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.