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Finding the Fourth Proportional to 393,765.70, 590,940.15 and 260,601.70

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Solution

The fourth proportional to 393,765.70, 590,940.15 and 260,601.70 is: 391,095.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,765.70 : 590,940.15 = 260,601.70 : x
  2. Step 2: Convert to fraction form
    393,765.70/590,940.15 = 260,601.70/x
  3. Step 3: Cross multiply
    393,765.70x = 590,940.15 × 260,601.70
  4. Step 4: Simplify right side
    393,765.70x = 154,000,007,688.26
  5. Step 5: Solve for x
    x = 154,000,007,688.26/393,765.70
  6. Step 6: Final answer
    x = 391,095.54

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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.