Home / 345,844.20-518,766.30-212,291.40

Finding the Fourth Proportional to 345,844.20, 518,766.30 and 212,291.40

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Solution

The fourth proportional to 345,844.20, 518,766.30 and 212,291.40 is: 318,437.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,844.20 : 518,766.30 = 212,291.40 : x
  2. Step 2: Convert to fraction form
    345,844.20/518,766.30 = 212,291.40/x
  3. Step 3: Cross multiply
    345,844.20x = 518,766.30 × 212,291.40
  4. Step 4: Simplify right side
    345,844.20x = 110,129,624,099.82
  5. Step 5: Solve for x
    x = 110,129,624,099.82/345,844.20
  6. Step 6: Final answer
    x = 318,437.10

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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.