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Finding the Fourth Proportional to 664,489.70, 996,880.35 and 215,134.10

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Solution

The fourth proportional to 664,489.70, 996,880.35 and 215,134.10 is: 322,748.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,489.70 : 996,880.35 = 215,134.10 : x
  2. Step 2: Convert to fraction form
    664,489.70/996,880.35 = 215,134.10/x
  3. Step 3: Cross multiply
    664,489.70x = 996,880.35 × 215,134.10
  4. Step 4: Simplify right side
    664,489.70x = 214,462,956,904.94
  5. Step 5: Solve for x
    x = 214,462,956,904.94/664,489.70
  6. Step 6: Final answer
    x = 322,748.35

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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.