Home / 387,531.14-580,983.03-121,154.54

Finding the Fourth Proportional to 387,531.14, 580,983.03 and 121,154.54

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Solution

The fourth proportional to 387,531.14, 580,983.03 and 121,154.54 is: 181,633.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,531.14 : 580,983.03 = 121,154.54 : x
  2. Step 2: Convert to fraction form
    387,531.14/580,983.03 = 121,154.54/x
  3. Step 3: Cross multiply
    387,531.14x = 580,983.03 × 121,154.54
  4. Step 4: Simplify right side
    387,531.14x = 70,388,728,842.54
  5. Step 5: Solve for x
    x = 70,388,728,842.54/387,531.14
  6. Step 6: Final answer
    x = 181,633.74

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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.