Home / 285,342.39-393,781.05-158,015.25

Finding the Fourth Proportional to 285,342.39, 393,781.05 and 158,015.25

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Solution

The fourth proportional to 285,342.39, 393,781.05 and 158,015.25 is: 218,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,342.39 : 393,781.05 = 158,015.25 : x
  2. Step 2: Convert to fraction form
    285,342.39/393,781.05 = 158,015.25/x
  3. Step 3: Cross multiply
    285,342.39x = 393,781.05 × 158,015.25
  4. Step 4: Simplify right side
    285,342.39x = 62,223,411,061.01
  5. Step 5: Solve for x
    x = 62,223,411,061.01/285,342.39
  6. Step 6: Final answer
    x = 218,065.78

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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.