Home / 345,370.25-518,350.62-135,155.81

Finding the Fourth Proportional to 345,370.25, 518,350.62 and 135,155.81

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Solution

The fourth proportional to 345,370.25, 518,350.62 and 135,155.81 is: 202,849.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,370.25 : 518,350.62 = 135,155.81 : x
  2. Step 2: Convert to fraction form
    345,370.25/518,350.62 = 135,155.81/x
  3. Step 3: Cross multiply
    345,370.25x = 518,350.62 × 135,155.81
  4. Step 4: Simplify right side
    345,370.25x = 70,058,097,910.10
  5. Step 5: Solve for x
    x = 70,058,097,910.10/345,370.25
  6. Step 6: Final answer
    x = 202,849.25

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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.