Home / 208,455.25-312,679.57-66,298.47

Finding the Fourth Proportional to 208,455.25, 312,679.57 and 66,298.47

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Solution

The fourth proportional to 208,455.25, 312,679.57 and 66,298.47 is: 99,446.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,455.25 : 312,679.57 = 66,298.47 : x
  2. Step 2: Convert to fraction form
    208,455.25/312,679.57 = 66,298.47/x
  3. Step 3: Cross multiply
    208,455.25x = 312,679.57 × 66,298.47
  4. Step 4: Simplify right side
    208,455.25x = 20,730,176,759.77
  5. Step 5: Solve for x
    x = 20,730,176,759.77/208,455.25
  6. Step 6: Final answer
    x = 99,446.65

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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.