Home / 287,730.93-396,942.71-274,390.23

Finding the Fourth Proportional to 287,730.93, 396,942.71 and 274,390.23

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Solution

The fourth proportional to 287,730.93, 396,942.71 and 274,390.23 is: 378,538.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,730.93 : 396,942.71 = 274,390.23 : x
  2. Step 2: Convert to fraction form
    287,730.93/396,942.71 = 274,390.23/x
  3. Step 3: Cross multiply
    287,730.93x = 396,942.71 × 274,390.23
  4. Step 4: Simplify right side
    287,730.93x = 108,917,201,493.72
  5. Step 5: Solve for x
    x = 108,917,201,493.72/287,730.93
  6. Step 6: Final answer
    x = 378,538.38

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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.