Home / 386,918.88-580,494.96-120,707.52

Finding the Fourth Proportional to 386,918.88, 580,494.96 and 120,707.52

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Solution

The fourth proportional to 386,918.88, 580,494.96 and 120,707.52 is: 181,097.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,918.88 : 580,494.96 = 120,707.52 : x
  2. Step 2: Convert to fraction form
    386,918.88/580,494.96 = 120,707.52/x
  3. Step 3: Cross multiply
    386,918.88x = 580,494.96 × 120,707.52
  4. Step 4: Simplify right side
    386,918.88x = 70,070,106,994.10
  5. Step 5: Solve for x
    x = 70,070,106,994.10/386,918.88
  6. Step 6: Final answer
    x = 181,097.67

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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.