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Finding the Fourth Proportional to 239,420.57, 359,052.71 and 79,453.54

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Solution

The fourth proportional to 239,420.57, 359,052.71 and 79,453.54 is: 119,154.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,420.57 : 359,052.71 = 79,453.54 : x
  2. Step 2: Convert to fraction form
    239,420.57/359,052.71 = 79,453.54/x
  3. Step 3: Cross multiply
    239,420.57x = 359,052.71 × 79,453.54
  4. Step 4: Simplify right side
    239,420.57x = 28,528,008,157.10
  5. Step 5: Solve for x
    x = 28,528,008,157.10/239,420.57
  6. Step 6: Final answer
    x = 119,154.37

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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.