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Finding the Fourth Proportional to 285,368.48, 393,791.28 and 158,036.48

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Solution

The fourth proportional to 285,368.48, 393,791.28 and 158,036.48 is: 218,080.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,368.48 : 393,791.28 = 158,036.48 : x
  2. Step 2: Convert to fraction form
    285,368.48/393,791.28 = 158,036.48/x
  3. Step 3: Cross multiply
    285,368.48x = 393,791.28 × 158,036.48
  4. Step 4: Simplify right side
    285,368.48x = 62,233,387,745.89
  5. Step 5: Solve for x
    x = 62,233,387,745.89/285,368.48
  6. Step 6: Final answer
    x = 218,080.80

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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.