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Finding the Fourth Proportional to 243,510.81, 336,043.94 and 136,080.81

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Solution

The fourth proportional to 243,510.81, 336,043.94 and 136,080.81 is: 187,790.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,510.81 : 336,043.94 = 136,080.81 : x
  2. Step 2: Convert to fraction form
    243,510.81/336,043.94 = 136,080.81/x
  3. Step 3: Cross multiply
    243,510.81x = 336,043.94 × 136,080.81
  4. Step 4: Simplify right side
    243,510.81x = 45,729,131,635.84
  5. Step 5: Solve for x
    x = 45,729,131,635.84/243,510.81
  6. Step 6: Final answer
    x = 187,790.97

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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.