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Finding the Fourth Proportional to 285,955.79, 394,666.29 and 158,672.39

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Solution

The fourth proportional to 285,955.79, 394,666.29 and 158,672.39 is: 218,994.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,955.79 : 394,666.29 = 158,672.39 : x
  2. Step 2: Convert to fraction form
    285,955.79/394,666.29 = 158,672.39/x
  3. Step 3: Cross multiply
    285,955.79x = 394,666.29 × 158,672.39
  4. Step 4: Simplify right side
    285,955.79x = 62,622,641,513.40
  5. Step 5: Solve for x
    x = 62,622,641,513.40/285,955.79
  6. Step 6: Final answer
    x = 218,994.14

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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.