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Finding the Fourth Proportional to 287,263.75, 396,426.71 and 159,942.08

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Solution

The fourth proportional to 287,263.75, 396,426.71 and 159,942.08 is: 220,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,263.75 : 396,426.71 = 159,942.08 : x
  2. Step 2: Convert to fraction form
    287,263.75/396,426.71 = 159,942.08/x
  3. Step 3: Cross multiply
    287,263.75x = 396,426.71 × 159,942.08
  4. Step 4: Simplify right side
    287,263.75x = 63,405,312,564.96
  5. Step 5: Solve for x
    x = 63,405,312,564.96/287,263.75
  6. Step 6: Final answer
    x = 220,721.59

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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.