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Finding the Fourth Proportional to 311,392.98, 429,754.02 and 190,614.06

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Solution

The fourth proportional to 311,392.98, 429,754.02 and 190,614.06 is: 263,066.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,392.98 : 429,754.02 = 190,614.06 : x
  2. Step 2: Convert to fraction form
    311,392.98/429,754.02 = 190,614.06/x
  3. Step 3: Cross multiply
    311,392.98x = 429,754.02 × 190,614.06
  4. Step 4: Simplify right side
    311,392.98x = 81,917,158,553.52
  5. Step 5: Solve for x
    x = 81,917,158,553.52/311,392.98
  6. Step 6: Final answer
    x = 263,066.81

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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.