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Finding the Fourth Proportional to 363,505.98, 545,370.20 and 186,138.52

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Solution

The fourth proportional to 363,505.98, 545,370.20 and 186,138.52 is: 279,264.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,505.98 : 545,370.20 = 186,138.52 : x
  2. Step 2: Convert to fraction form
    363,505.98/545,370.20 = 186,138.52/x
  3. Step 3: Cross multiply
    363,505.98x = 545,370.20 × 186,138.52
  4. Step 4: Simplify right side
    363,505.98x = 101,514,401,880.10
  5. Step 5: Solve for x
    x = 101,514,401,880.10/363,505.98
  6. Step 6: Final answer
    x = 279,264.74

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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.