Home / 287,004.84-396,085.64-159,680.73

Finding the Fourth Proportional to 287,004.84, 396,085.64 and 159,680.73

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Solution

The fourth proportional to 287,004.84, 396,085.64 and 159,680.73 is: 220,369.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,004.84 : 396,085.64 = 159,680.73 : x
  2. Step 2: Convert to fraction form
    287,004.84/396,085.64 = 159,680.73/x
  3. Step 3: Cross multiply
    287,004.84x = 396,085.64 × 159,680.73
  4. Step 4: Simplify right side
    287,004.84x = 63,247,243,339.31
  5. Step 5: Solve for x
    x = 63,247,243,339.31/287,004.84
  6. Step 6: Final answer
    x = 220,369.95

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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.