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Finding the Fourth Proportional to 287,672.06, 396,992.66 and 160,333.98

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Solution

The fourth proportional to 287,672.06, 396,992.66 and 160,333.98 is: 221,263.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,672.06 : 396,992.66 = 160,333.98 : x
  2. Step 2: Convert to fraction form
    287,672.06/396,992.66 = 160,333.98/x
  3. Step 3: Cross multiply
    287,672.06x = 396,992.66 × 160,333.98
  4. Step 4: Simplify right side
    287,672.06x = 63,651,412,406.92
  5. Step 5: Solve for x
    x = 63,651,412,406.92/287,672.06
  6. Step 6: Final answer
    x = 221,263.80

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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.