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Finding the Fourth Proportional to 286,019.10, 394,706.40 and 158,694.39

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Solution

The fourth proportional to 286,019.10, 394,706.40 and 158,694.39 is: 218,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,019.10 : 394,706.40 = 158,694.39 : x
  2. Step 2: Convert to fraction form
    286,019.10/394,706.40 = 158,694.39/x
  3. Step 3: Cross multiply
    286,019.10x = 394,706.40 × 158,694.39
  4. Step 4: Simplify right side
    286,019.10x = 62,637,691,377.10
  5. Step 5: Solve for x
    x = 62,637,691,377.10/286,019.10
  6. Step 6: Final answer
    x = 218,998.28

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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.