Home / 258,609.93-387,921.38-71,623.05

Finding the Fourth Proportional to 258,609.93, 387,921.38 and 71,623.05

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Solution

The fourth proportional to 258,609.93, 387,921.38 and 71,623.05 is: 107,436.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,609.93 : 387,921.38 = 71,623.05 : x
  2. Step 2: Convert to fraction form
    258,609.93/387,921.38 = 71,623.05/x
  3. Step 3: Cross multiply
    258,609.93x = 387,921.38 × 71,623.05
  4. Step 4: Simplify right side
    258,609.93x = 27,784,112,037.69
  5. Step 5: Solve for x
    x = 27,784,112,037.69/258,609.93
  6. Step 6: Final answer
    x = 107,436.37

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1.5x scale

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.