Home / 345,819.66-518,774.85-135,430.26

Finding the Fourth Proportional to 345,819.66, 518,774.85 and 135,430.26

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Solution

The fourth proportional to 345,819.66, 518,774.85 and 135,430.26 is: 203,163.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,819.66 : 518,774.85 = 135,430.26 : x
  2. Step 2: Convert to fraction form
    345,819.66/518,774.85 = 135,430.26/x
  3. Step 3: Cross multiply
    345,819.66x = 518,774.85 × 135,430.26
  4. Step 4: Simplify right side
    345,819.66x = 70,257,812,816.96
  5. Step 5: Solve for x
    x = 70,257,812,816.96/345,819.66
  6. Step 6: Final answer
    x = 203,163.15

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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.