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Finding the Fourth Proportional to 397,455.30, 595,405.35 and 239,213.70

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Solution

The fourth proportional to 397,455.30, 595,405.35 and 239,213.70 is: 358,352.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,455.30 : 595,405.35 = 239,213.70 : x
  2. Step 2: Convert to fraction form
    397,455.30/595,405.35 = 239,213.70/x
  3. Step 3: Cross multiply
    397,455.30x = 595,405.35 × 239,213.70
  4. Step 4: Simplify right side
    397,455.30x = 142,429,116,773.30
  5. Step 5: Solve for x
    x = 142,429,116,773.30/397,455.30
  6. Step 6: Final answer
    x = 358,352.54

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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.