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Finding the Fourth Proportional to 239,212.60, 358,818.90 and 200,721.40

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Solution

The fourth proportional to 239,212.60, 358,818.90 and 200,721.40 is: 301,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,212.60 : 358,818.90 = 200,721.40 : x
  2. Step 2: Convert to fraction form
    239,212.60/358,818.90 = 200,721.40/x
  3. Step 3: Cross multiply
    239,212.60x = 358,818.90 × 200,721.40
  4. Step 4: Simplify right side
    239,212.60x = 72,022,631,954.46
  5. Step 5: Solve for x
    x = 72,022,631,954.46/239,212.60
  6. Step 6: Final answer
    x = 301,082.10

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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.