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Finding the Fourth Proportional to 245,318.70, 367,978.05 and 161,337.90

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Solution

The fourth proportional to 245,318.70, 367,978.05 and 161,337.90 is: 242,006.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,318.70 : 367,978.05 = 161,337.90 : x
  2. Step 2: Convert to fraction form
    245,318.70/367,978.05 = 161,337.90/x
  3. Step 3: Cross multiply
    245,318.70x = 367,978.05 × 161,337.90
  4. Step 4: Simplify right side
    245,318.70x = 59,368,805,833.10
  5. Step 5: Solve for x
    x = 59,368,805,833.10/245,318.70
  6. Step 6: Final answer
    x = 242,006.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.