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Finding the Fourth Proportional to 245,043.40, 367,079.10 and 215,818.60

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Solution

The fourth proportional to 245,043.40, 367,079.10 and 215,818.60 is: 323,299.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,043.40 : 367,079.10 = 215,818.60 : x
  2. Step 2: Convert to fraction form
    245,043.40/367,079.10 = 215,818.60/x
  3. Step 3: Cross multiply
    245,043.40x = 367,079.10 × 215,818.60
  4. Step 4: Simplify right side
    245,043.40x = 79,222,497,451.26
  5. Step 5: Solve for x
    x = 79,222,497,451.26/245,043.40
  6. Step 6: Final answer
    x = 323,299.86

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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.