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Finding the Fourth Proportional to 387,395.94, 580,761.06 and 134,643.59

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Solution

The fourth proportional to 387,395.94, 580,761.06 and 134,643.59 is: 201,849.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,395.94 : 580,761.06 = 134,643.59 : x
  2. Step 2: Convert to fraction form
    387,395.94/580,761.06 = 134,643.59/x
  3. Step 3: Cross multiply
    387,395.94x = 580,761.06 × 134,643.59
  4. Step 4: Simplify right side
    387,395.94x = 78,195,751,146.80
  5. Step 5: Solve for x
    x = 78,195,751,146.80/387,395.94
  6. Step 6: Final answer
    x = 201,849.69

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Why These Related Problems?

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