Home / 208,454.25-312,678.07-66,297.47

Finding the Fourth Proportional to 208,454.25, 312,678.07 and 66,297.47

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Solution

The fourth proportional to 208,454.25, 312,678.07 and 66,297.47 is: 99,445.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,454.25 : 312,678.07 = 66,297.47 : x
  2. Step 2: Convert to fraction form
    208,454.25/312,678.07 = 66,297.47/x
  3. Step 3: Cross multiply
    208,454.25x = 312,678.07 × 66,297.47
  4. Step 4: Simplify right side
    208,454.25x = 20,729,764,408.89
  5. Step 5: Solve for x
    x = 20,729,764,408.89/208,454.25
  6. Step 6: Final answer
    x = 99,445.15

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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.