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Finding the Fourth Proportional to 287,273.66, 396,440.39 and 159,951.98

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Solution

The fourth proportional to 287,273.66, 396,440.39 and 159,951.98 is: 220,735.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,273.66 : 396,440.39 = 159,951.98 : x
  2. Step 2: Convert to fraction form
    287,273.66/396,440.39 = 159,951.98/x
  3. Step 3: Cross multiply
    287,273.66x = 396,440.39 × 159,951.98
  4. Step 4: Simplify right side
    287,273.66x = 63,411,426,723.45
  5. Step 5: Solve for x
    x = 63,411,426,723.45/287,273.66
  6. Step 6: Final answer
    x = 220,735.27

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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.