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Finding the Fourth Proportional to 634,684.80, 951,429.76 and 213,666.56

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Solution

The fourth proportional to 634,684.80, 951,429.76 and 213,666.56 is: 320,298.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,684.80 : 951,429.76 = 213,666.56 : x
  2. Step 2: Convert to fraction form
    634,684.80/951,429.76 = 213,666.56/x
  3. Step 3: Cross multiply
    634,684.80x = 951,429.76 × 213,666.56
  4. Step 4: Simplify right side
    634,684.80x = 203,288,723,900.83
  5. Step 5: Solve for x
    x = 203,288,723,900.83/634,684.80
  6. Step 6: Final answer
    x = 320,298.71

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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.