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Finding the Fourth Proportional to 351,851.88, 527,778.27 and 85,612.44

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Solution

The fourth proportional to 351,851.88, 527,778.27 and 85,612.44 is: 128,418.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,851.88 : 527,778.27 = 85,612.44 : x
  2. Step 2: Convert to fraction form
    351,851.88/527,778.27 = 85,612.44/x
  3. Step 3: Cross multiply
    351,851.88x = 527,778.27 × 85,612.44
  4. Step 4: Simplify right side
    351,851.88x = 45,184,385,473.68
  5. Step 5: Solve for x
    x = 45,184,385,473.68/351,851.88
  6. Step 6: Final answer
    x = 128,418.77

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1.5x scale

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.