Home / 345,372.24-518,411.72-285,209.08

Finding the Fourth Proportional to 345,372.24, 518,411.72 and 285,209.08

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Solution

The fourth proportional to 345,372.24, 518,411.72 and 285,209.08 is: 428,105.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,372.24 : 518,411.72 = 285,209.08 : x
  2. Step 2: Convert to fraction form
    345,372.24/518,411.72 = 285,209.08/x
  3. Step 3: Cross multiply
    345,372.24x = 518,411.72 × 285,209.08
  4. Step 4: Simplify right side
    345,372.24x = 147,855,728,296.37
  5. Step 5: Solve for x
    x = 147,855,728,296.37/345,372.24
  6. Step 6: Final answer
    x = 428,105.43

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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.