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Finding the Fourth Proportional to 243,612.66, 336,192.39 and 136,194.78

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Solution

The fourth proportional to 243,612.66, 336,192.39 and 136,194.78 is: 187,952.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,612.66 : 336,192.39 = 136,194.78 : x
  2. Step 2: Convert to fraction form
    243,612.66/336,192.39 = 136,194.78/x
  3. Step 3: Cross multiply
    243,612.66x = 336,192.39 × 136,194.78
  4. Step 4: Simplify right side
    243,612.66x = 45,787,648,593.72
  5. Step 5: Solve for x
    x = 45,787,648,593.72/243,612.66
  6. Step 6: Final answer
    x = 187,952.66

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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.