Home / 208,418.58-312,564.02-75,282.42

Finding the Fourth Proportional to 208,418.58, 312,564.02 and 75,282.42

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Solution

The fourth proportional to 208,418.58, 312,564.02 and 75,282.42 is: 112,900.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,418.58 : 312,564.02 = 75,282.42 : x
  2. Step 2: Convert to fraction form
    208,418.58/312,564.02 = 75,282.42/x
  3. Step 3: Cross multiply
    208,418.58x = 312,564.02 × 75,282.42
  4. Step 4: Simplify right side
    208,418.58x = 23,530,575,830.53
  5. Step 5: Solve for x
    x = 23,530,575,830.53/208,418.58
  6. Step 6: Final answer
    x = 112,900.57

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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.