Home / 345,718.72-518,534.34-135,504.28

Finding the Fourth Proportional to 345,718.72, 518,534.34 and 135,504.28

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Solution

The fourth proportional to 345,718.72, 518,534.34 and 135,504.28 is: 203,239.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,718.72 : 518,534.34 = 135,504.28 : x
  2. Step 2: Convert to fraction form
    345,718.72/518,534.34 = 135,504.28/x
  3. Step 3: Cross multiply
    345,718.72x = 518,534.34 × 135,504.28
  4. Step 4: Simplify right side
    345,718.72x = 70,263,622,396.98
  5. Step 5: Solve for x
    x = 70,263,622,396.98/345,718.72
  6. Step 6: Final answer
    x = 203,239.28

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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.