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Finding the Fourth Proportional to 355,520.27, 490,625.70 and 212,253.59

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Solution

The fourth proportional to 355,520.27, 490,625.70 and 212,253.59 is: 292,914.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,520.27 : 490,625.70 = 212,253.59 : x
  2. Step 2: Convert to fraction form
    355,520.27/490,625.70 = 212,253.59/x
  3. Step 3: Cross multiply
    355,520.27x = 490,625.70 × 212,253.59
  4. Step 4: Simplify right side
    355,520.27x = 104,137,066,171.26
  5. Step 5: Solve for x
    x = 104,137,066,171.26/355,520.27
  6. Step 6: Final answer
    x = 292,914.57

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1.5x scale

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.