Home / 387,101.16-580,651.52-120,884.49

Finding the Fourth Proportional to 387,101.16, 580,651.52 and 120,884.49

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Solution

The fourth proportional to 387,101.16, 580,651.52 and 120,884.49 is: 181,326.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,101.16 : 580,651.52 = 120,884.49 : x
  2. Step 2: Convert to fraction form
    387,101.16/580,651.52 = 120,884.49/x
  3. Step 3: Cross multiply
    387,101.16x = 580,651.52 × 120,884.49
  4. Step 4: Simplify right side
    387,101.16x = 70,191,762,862.92
  5. Step 5: Solve for x
    x = 70,191,762,862.92/387,101.16
  6. Step 6: Final answer
    x = 181,326.67

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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.