Home / 438,460.14-655,790.34-258,115.80

Finding the Fourth Proportional to 438,460.14, 655,790.34 and 258,115.80

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Solution

The fourth proportional to 438,460.14, 655,790.34 and 258,115.80 is: 386,055.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,460.14 : 655,790.34 = 258,115.80 : x
  2. Step 2: Convert to fraction form
    438,460.14/655,790.34 = 258,115.80/x
  3. Step 3: Cross multiply
    438,460.14x = 655,790.34 × 258,115.80
  4. Step 4: Simplify right side
    438,460.14x = 169,269,848,241.37
  5. Step 5: Solve for x
    x = 169,269,848,241.37/438,460.14
  6. Step 6: Final answer
    x = 386,055.27

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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.