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Finding the Fourth Proportional to 285,900.66, 394,590.16 and 158,617.26

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Solution

The fourth proportional to 285,900.66, 394,590.16 and 158,617.26 is: 218,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,900.66 : 394,590.16 = 158,617.26 : x
  2. Step 2: Convert to fraction form
    285,900.66/394,590.16 = 158,617.26/x
  3. Step 3: Cross multiply
    285,900.66x = 394,590.16 × 158,617.26
  4. Step 4: Simplify right side
    285,900.66x = 62,588,810,002.16
  5. Step 5: Solve for x
    x = 62,588,810,002.16/285,900.66
  6. Step 6: Final answer
    x = 218,918.03

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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.