Home / 208,272.58-287,415.75-112,778.98

Finding the Fourth Proportional to 208,272.58, 287,415.75 and 112,778.98

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Solution

The fourth proportional to 208,272.58, 287,415.75 and 112,778.98 is: 155,634.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,272.58 : 287,415.75 = 112,778.98 : x
  2. Step 2: Convert to fraction form
    208,272.58/287,415.75 = 112,778.98/x
  3. Step 3: Cross multiply
    208,272.58x = 287,415.75 × 112,778.98
  4. Step 4: Simplify right side
    208,272.58x = 32,414,455,120.94
  5. Step 5: Solve for x
    x = 32,414,455,120.94/208,272.58
  6. Step 6: Final answer
    x = 155,634.77

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1.5x scale

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.