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Finding the Fourth Proportional to 238,520.13, 328,960.60 and 161,913.30

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Solution

The fourth proportional to 238,520.13, 328,960.60 and 161,913.30 is: 223,306.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,520.13 : 328,960.60 = 161,913.30 : x
  2. Step 2: Convert to fraction form
    238,520.13/328,960.60 = 161,913.30/x
  3. Step 3: Cross multiply
    238,520.13x = 328,960.60 × 161,913.30
  4. Step 4: Simplify right side
    238,520.13x = 53,263,096,315.98
  5. Step 5: Solve for x
    x = 53,263,096,315.98/238,520.13
  6. Step 6: Final answer
    x = 223,306.50

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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.