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Finding the Fourth Proportional to 208,380.66, 312,952.32 and 190,813.56

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Solution

The fourth proportional to 208,380.66, 312,952.32 and 190,813.56 is: 286,569.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,380.66 : 312,952.32 = 190,813.56 : x
  2. Step 2: Convert to fraction form
    208,380.66/312,952.32 = 190,813.56/x
  3. Step 3: Cross multiply
    208,380.66x = 312,952.32 × 190,813.56
  4. Step 4: Simplify right side
    208,380.66x = 59,715,546,289.46
  5. Step 5: Solve for x
    x = 59,715,546,289.46/208,380.66
  6. Step 6: Final answer
    x = 286,569.52

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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.