Home / 208,290.21-287,440.05-112,796.61

Finding the Fourth Proportional to 208,290.21, 287,440.05 and 112,796.61

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Solution

The fourth proportional to 208,290.21, 287,440.05 and 112,796.61 is: 155,659.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,290.21 : 287,440.05 = 112,796.61 : x
  2. Step 2: Convert to fraction form
    208,290.21/287,440.05 = 112,796.61/x
  3. Step 3: Cross multiply
    208,290.21x = 287,440.05 × 112,796.61
  4. Step 4: Simplify right side
    208,290.21x = 32,422,263,218.23
  5. Step 5: Solve for x
    x = 32,422,263,218.23/208,290.21
  6. Step 6: Final answer
    x = 155,659.08

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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.