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Finding the Fourth Proportional to 285,570.69, 394,089.90 and 158,248.41

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Solution

The fourth proportional to 285,570.69, 394,089.90 and 158,248.41 is: 218,384.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,570.69 : 394,089.90 = 158,248.41 : x
  2. Step 2: Convert to fraction form
    285,570.69/394,089.90 = 158,248.41/x
  3. Step 3: Cross multiply
    285,570.69x = 394,089.90 × 158,248.41
  4. Step 4: Simplify right side
    285,570.69x = 62,364,100,072.06
  5. Step 5: Solve for x
    x = 62,364,100,072.06/285,570.69
  6. Step 6: Final answer
    x = 218,384.11

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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.