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Finding the Fourth Proportional to 243,392.94, 335,858.16 and 135,960.66

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Solution

The fourth proportional to 243,392.94, 335,858.16 and 135,960.66 is: 187,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,392.94 : 335,858.16 = 135,960.66 : x
  2. Step 2: Convert to fraction form
    243,392.94/335,858.16 = 135,960.66/x
  3. Step 3: Cross multiply
    243,392.94x = 335,858.16 × 135,960.66
  4. Step 4: Simplify right side
    243,392.94x = 45,663,497,099.99
  5. Step 5: Solve for x
    x = 45,663,497,099.99/243,392.94
  6. Step 6: Final answer
    x = 187,612.25

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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.