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Finding the Fourth Proportional to 287,732.93, 396,945.47 and 274,392.23

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Solution

The fourth proportional to 287,732.93, 396,945.47 and 274,392.23 is: 378,541.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,732.93 : 396,945.47 = 274,392.23 : x
  2. Step 2: Convert to fraction form
    287,732.93/396,945.47 = 274,392.23/x
  3. Step 3: Cross multiply
    287,732.93x = 396,945.47 × 274,392.23
  4. Step 4: Simplify right side
    287,732.93x = 108,918,752,701.70
  5. Step 5: Solve for x
    x = 108,918,752,701.70/287,732.93
  6. Step 6: Final answer
    x = 378,541.14

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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.