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Finding the Fourth Proportional to 355,700.52, 490,874.58 and 212,433.66

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Solution

The fourth proportional to 355,700.52, 490,874.58 and 212,433.66 is: 293,163.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,700.52 : 490,874.58 = 212,433.66 : x
  2. Step 2: Convert to fraction form
    355,700.52/490,874.58 = 212,433.66/x
  3. Step 3: Cross multiply
    355,700.52x = 490,874.58 × 212,433.66
  4. Step 4: Simplify right side
    355,700.52x = 104,278,283,630.36
  5. Step 5: Solve for x
    x = 104,278,283,630.36/355,700.52
  6. Step 6: Final answer
    x = 293,163.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.