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Finding the Fourth Proportional to 342,074.87, 512,894.95 and 300,039.35

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Solution

The fourth proportional to 342,074.87, 512,894.95 and 300,039.35 is: 449,868.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,074.87 : 512,894.95 = 300,039.35 : x
  2. Step 2: Convert to fraction form
    342,074.87/512,894.95 = 300,039.35/x
  3. Step 3: Cross multiply
    342,074.87x = 512,894.95 × 300,039.35
  4. Step 4: Simplify right side
    342,074.87x = 153,888,667,416.28
  5. Step 5: Solve for x
    x = 153,888,667,416.28/342,074.87
  6. Step 6: Final answer
    x = 449,868.38

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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.