Home / 387,521.14-580,968.03-121,144.54

Finding the Fourth Proportional to 387,521.14, 580,968.03 and 121,144.54

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Solution

The fourth proportional to 387,521.14, 580,968.03 and 121,144.54 is: 181,618.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,521.14 : 580,968.03 = 121,144.54 : x
  2. Step 2: Convert to fraction form
    387,521.14/580,968.03 = 121,144.54/x
  3. Step 3: Cross multiply
    387,521.14x = 580,968.03 × 121,144.54
  4. Step 4: Simplify right side
    387,521.14x = 70,381,101,844.22
  5. Step 5: Solve for x
    x = 70,381,101,844.22/387,521.14
  6. Step 6: Final answer
    x = 181,618.74

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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.