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Finding the Fourth Proportional to 342,975.30, 515,046.15 and 254,328.90

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Solution

The fourth proportional to 342,975.30, 515,046.15 and 254,328.90 is: 381,925.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,975.30 : 515,046.15 = 254,328.90 : x
  2. Step 2: Convert to fraction form
    342,975.30/515,046.15 = 254,328.90/x
  3. Step 3: Cross multiply
    342,975.30x = 515,046.15 × 254,328.90
  4. Step 4: Simplify right side
    342,975.30x = 130,991,120,778.74
  5. Step 5: Solve for x
    x = 130,991,120,778.74/342,975.30
  6. Step 6: Final answer
    x = 381,925.81

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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.