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Finding the Fourth Proportional to 342,989.10, 513,608.85 and 273,005.10

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Solution

The fourth proportional to 342,989.10, 513,608.85 and 273,005.10 is: 408,811.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,989.10 : 513,608.85 = 273,005.10 : x
  2. Step 2: Convert to fraction form
    342,989.10/513,608.85 = 273,005.10/x
  3. Step 3: Cross multiply
    342,989.10x = 513,608.85 × 273,005.10
  4. Step 4: Simplify right side
    342,989.10x = 140,217,835,455.14
  5. Step 5: Solve for x
    x = 140,217,835,455.14/342,989.10
  6. Step 6: Final answer
    x = 408,811.35

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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.