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Finding the Fourth Proportional to 297,661.60, 410,780.40 and 161,695.50

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Solution

The fourth proportional to 297,661.60, 410,780.40 and 161,695.50 is: 223,143.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,661.60 : 410,780.40 = 161,695.50 : x
  2. Step 2: Convert to fraction form
    297,661.60/410,780.40 = 161,695.50/x
  3. Step 3: Cross multiply
    297,661.60x = 410,780.40 × 161,695.50
  4. Step 4: Simplify right side
    297,661.60x = 66,421,342,168.20
  5. Step 5: Solve for x
    x = 66,421,342,168.20/297,661.60
  6. Step 6: Final answer
    x = 223,143.81

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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.