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Finding the Fourth Proportional to 356,458.87, 534,528.46 and 212,432.70

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Solution

The fourth proportional to 356,458.87, 534,528.46 and 212,432.70 is: 318,553.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,458.87 : 534,528.46 = 212,432.70 : x
  2. Step 2: Convert to fraction form
    356,458.87/534,528.46 = 212,432.70/x
  3. Step 3: Cross multiply
    356,458.87x = 534,528.46 × 212,432.70
  4. Step 4: Simplify right side
    356,458.87x = 113,551,324,515.72
  5. Step 5: Solve for x
    x = 113,551,324,515.72/356,458.87
  6. Step 6: Final answer
    x = 318,553.79

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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.