Home / 280,132.59-419,278.73-213,211.47

Finding the Fourth Proportional to 280,132.59, 419,278.73 and 213,211.47

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Solution

The fourth proportional to 280,132.59, 419,278.73 and 213,211.47 is: 319,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,132.59 : 419,278.73 = 213,211.47 : x
  2. Step 2: Convert to fraction form
    280,132.59/419,278.73 = 213,211.47/x
  3. Step 3: Cross multiply
    280,132.59x = 419,278.73 × 213,211.47
  4. Step 4: Simplify right side
    280,132.59x = 89,395,033,296.98
  5. Step 5: Solve for x
    x = 89,395,033,296.98/280,132.59
  6. Step 6: Final answer
    x = 319,116.86

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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.