Home / 387,402.36-581,103.60-106,919.64

Finding the Fourth Proportional to 387,402.36, 581,103.60 and 106,919.64

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Solution

The fourth proportional to 387,402.36, 581,103.60 and 106,919.64 is: 160,379.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,402.36 : 581,103.60 = 106,919.64 : x
  2. Step 2: Convert to fraction form
    387,402.36/581,103.60 = 106,919.64/x
  3. Step 3: Cross multiply
    387,402.36x = 581,103.60 × 106,919.64
  4. Step 4: Simplify right side
    387,402.36x = 62,131,387,714.70
  5. Step 5: Solve for x
    x = 62,131,387,714.70/387,402.36
  6. Step 6: Final answer
    x = 160,379.48

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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.