Home / 387,072.80-580,609.24-120,856.11

Finding the Fourth Proportional to 387,072.80, 580,609.24 and 120,856.11

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Solution

The fourth proportional to 387,072.80, 580,609.24 and 120,856.11 is: 181,284.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,072.80 : 580,609.24 = 120,856.11 : x
  2. Step 2: Convert to fraction form
    387,072.80/580,609.24 = 120,856.11/x
  3. Step 3: Cross multiply
    387,072.80x = 580,609.24 × 120,856.11
  4. Step 4: Simplify right side
    387,072.80x = 70,170,174,176.46
  5. Step 5: Solve for x
    x = 70,170,174,176.46/387,072.80
  6. Step 6: Final answer
    x = 181,284.18

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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.