Home / 387,739.14-581,608.92-121,520.39

Finding the Fourth Proportional to 387,739.14, 581,608.92 and 121,520.39

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Solution

The fourth proportional to 387,739.14, 581,608.92 and 121,520.39 is: 182,280.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,739.14 : 581,608.92 = 121,520.39 : x
  2. Step 2: Convert to fraction form
    387,739.14/581,608.92 = 121,520.39/x
  3. Step 3: Cross multiply
    387,739.14x = 581,608.92 × 121,520.39
  4. Step 4: Simplify right side
    387,739.14x = 70,677,342,178.28
  5. Step 5: Solve for x
    x = 70,677,342,178.28/387,739.14
  6. Step 6: Final answer
    x = 182,280.65

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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.