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Finding the Fourth Proportional to 286,008.46, 394,691.72 and 158,683.74

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Solution

The fourth proportional to 286,008.46, 394,691.72 and 158,683.74 is: 218,983.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,008.46 : 394,691.72 = 158,683.74 : x
  2. Step 2: Convert to fraction form
    286,008.46/394,691.72 = 158,683.74/x
  3. Step 3: Cross multiply
    286,008.46x = 394,691.72 × 158,683.74
  4. Step 4: Simplify right side
    286,008.46x = 62,631,158,276.63
  5. Step 5: Solve for x
    x = 62,631,158,276.63/286,008.46
  6. Step 6: Final answer
    x = 218,983.59

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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.