Home / 387,789.09-581,369.85-174,400.73

Finding the Fourth Proportional to 387,789.09, 581,369.85 and 174,400.73

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Solution

The fourth proportional to 387,789.09, 581,369.85 and 174,400.73 is: 261,459.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,789.09 : 581,369.85 = 174,400.73 : x
  2. Step 2: Convert to fraction form
    387,789.09/581,369.85 = 174,400.73/x
  3. Step 3: Cross multiply
    387,789.09x = 581,369.85 × 174,400.73
  4. Step 4: Simplify right side
    387,789.09x = 101,391,323,333.14
  5. Step 5: Solve for x
    x = 101,391,323,333.14/387,789.09
  6. Step 6: Final answer
    x = 261,459.97

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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.