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Finding the Fourth Proportional to 287,173.85, 396,271.29 and 166,353.95

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Solution

The fourth proportional to 287,173.85, 396,271.29 and 166,353.95 is: 229,551.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,173.85 : 396,271.29 = 166,353.95 : x
  2. Step 2: Convert to fraction form
    287,173.85/396,271.29 = 166,353.95/x
  3. Step 3: Cross multiply
    287,173.85x = 396,271.29 × 166,353.95
  4. Step 4: Simplify right side
    287,173.85x = 65,921,294,363.10
  5. Step 5: Solve for x
    x = 65,921,294,363.10/287,173.85
  6. Step 6: Final answer
    x = 229,551.87

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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.