Home / 345,395.50-518,069.49-212,296.30

Finding the Fourth Proportional to 345,395.50, 518,069.49 and 212,296.30

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Solution

The fourth proportional to 345,395.50, 518,069.49 and 212,296.30 is: 318,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,395.50 : 518,069.49 = 212,296.30 : x
  2. Step 2: Convert to fraction form
    345,395.50/518,069.49 = 212,296.30/x
  3. Step 3: Cross multiply
    345,395.50x = 518,069.49 × 212,296.30
  4. Step 4: Simplify right side
    345,395.50x = 109,984,235,869.89
  5. Step 5: Solve for x
    x = 109,984,235,869.89/345,395.50
  6. Step 6: Final answer
    x = 318,429.85

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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.