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Finding the Fourth Proportional to 387,978.51, 582,109.92 and 163,395.48

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Solution

The fourth proportional to 387,978.51, 582,109.92 and 163,395.48 is: 245,153.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,978.51 : 582,109.92 = 163,395.48 : x
  2. Step 2: Convert to fraction form
    387,978.51/582,109.92 = 163,395.48/x
  3. Step 3: Cross multiply
    387,978.51x = 582,109.92 × 163,395.48
  4. Step 4: Simplify right side
    387,978.51x = 95,114,129,791.16
  5. Step 5: Solve for x
    x = 95,114,129,791.16/387,978.51
  6. Step 6: Final answer
    x = 245,153.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.