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Finding the Fourth Proportional to 285,862.10, 394,505.51 and 158,534.96

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Solution

The fourth proportional to 285,862.10, 394,505.51 and 158,534.96 is: 218,787.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,862.10 : 394,505.51 = 158,534.96 : x
  2. Step 2: Convert to fraction form
    285,862.10/394,505.51 = 158,534.96/x
  3. Step 3: Cross multiply
    285,862.10x = 394,505.51 × 158,534.96
  4. Step 4: Simplify right side
    285,862.10x = 62,542,912,482.43
  5. Step 5: Solve for x
    x = 62,542,912,482.43/285,862.10
  6. Step 6: Final answer
    x = 218,787.01

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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.