Home / 208,278.45-287,422.83-112,782.96

Finding the Fourth Proportional to 208,278.45, 287,422.83 and 112,782.96

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Solution

The fourth proportional to 208,278.45, 287,422.83 and 112,782.96 is: 155,639.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,278.45 : 287,422.83 = 112,782.96 : x
  2. Step 2: Convert to fraction form
    208,278.45/287,422.83 = 112,782.96/x
  3. Step 3: Cross multiply
    208,278.45x = 287,422.83 × 112,782.96
  4. Step 4: Simplify right side
    208,278.45x = 32,416,397,538.98
  5. Step 5: Solve for x
    x = 32,416,397,538.98/208,278.45
  6. Step 6: Final answer
    x = 155,639.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.