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Finding the Fourth Proportional to 243,436.80, 335,936.58 and 136,007.64

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Solution

The fourth proportional to 243,436.80, 335,936.58 and 136,007.64 is: 187,687.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,436.80 : 335,936.58 = 136,007.64 : x
  2. Step 2: Convert to fraction form
    243,436.80/335,936.58 = 136,007.64/x
  3. Step 3: Cross multiply
    243,436.80x = 335,936.58 × 136,007.64
  4. Step 4: Simplify right side
    243,436.80x = 45,689,939,755.79
  5. Step 5: Solve for x
    x = 45,689,939,755.79/243,436.80
  6. Step 6: Final answer
    x = 187,687.07

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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.