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Finding the Fourth Proportional to 354,265.35, 531,512.78 and 212,088.39

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Solution

The fourth proportional to 354,265.35, 531,512.78 and 212,088.39 is: 318,201.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,265.35 : 531,512.78 = 212,088.39 : x
  2. Step 2: Convert to fraction form
    354,265.35/531,512.78 = 212,088.39/x
  3. Step 3: Cross multiply
    354,265.35x = 531,512.78 × 212,088.39
  4. Step 4: Simplify right side
    354,265.35x = 112,727,689,774.62
  5. Step 5: Solve for x
    x = 112,727,689,774.62/354,265.35
  6. Step 6: Final answer
    x = 318,201.29

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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.