Home / 345,814.08-518,574.24-135,418.56

Finding the Fourth Proportional to 345,814.08, 518,574.24 and 135,418.56

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Solution

The fourth proportional to 345,814.08, 518,574.24 and 135,418.56 is: 203,070.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,814.08 : 518,574.24 = 135,418.56 : x
  2. Step 2: Convert to fraction form
    345,814.08/518,574.24 = 135,418.56/x
  3. Step 3: Cross multiply
    345,814.08x = 518,574.24 × 135,418.56
  4. Step 4: Simplify right side
    345,814.08x = 70,224,576,833.89
  5. Step 5: Solve for x
    x = 70,224,576,833.89/345,814.08
  6. Step 6: Final answer
    x = 203,070.32

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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.