Home / 208,221.30-287,345.07-112,727.97

Finding the Fourth Proportional to 208,221.30, 287,345.07 and 112,727.97

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Solution

The fourth proportional to 208,221.30, 287,345.07 and 112,727.97 is: 155,564.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,221.30 : 287,345.07 = 112,727.97 : x
  2. Step 2: Convert to fraction form
    208,221.30/287,345.07 = 112,727.97/x
  3. Step 3: Cross multiply
    208,221.30x = 287,345.07 × 112,727.97
  4. Step 4: Simplify right side
    208,221.30x = 32,391,826,430.61
  5. Step 5: Solve for x
    x = 32,391,826,430.61/208,221.30
  6. Step 6: Final answer
    x = 155,564.42

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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.