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Finding the Fourth Proportional to 340,438.75, 510,612.15 and 140,731.44

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Solution

The fourth proportional to 340,438.75, 510,612.15 and 140,731.44 is: 211,078.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,438.75 : 510,612.15 = 140,731.44 : x
  2. Step 2: Convert to fraction form
    340,438.75/510,612.15 = 140,731.44/x
  3. Step 3: Cross multiply
    340,438.75x = 510,612.15 × 140,731.44
  4. Step 4: Simplify right side
    340,438.75x = 71,859,183,151.00
  5. Step 5: Solve for x
    x = 71,859,183,151.00/340,438.75
  6. Step 6: Final answer
    x = 211,078.15

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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.