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Finding the Fourth Proportional to 342,358.70, 513,352.13 and 102,439.33

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Solution

The fourth proportional to 342,358.70, 513,352.13 and 102,439.33 is: 153,603.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,358.70 : 513,352.13 = 102,439.33 : x
  2. Step 2: Convert to fraction form
    342,358.70/513,352.13 = 102,439.33/x
  3. Step 3: Cross multiply
    342,358.70x = 513,352.13 × 102,439.33
  4. Step 4: Simplify right side
    342,358.70x = 52,587,449,919.52
  5. Step 5: Solve for x
    x = 52,587,449,919.52/342,358.70
  6. Step 6: Final answer
    x = 153,603.37

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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.