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Finding the Fourth Proportional to 634,415.60, 951,616.92 and 213,688.64

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Solution

The fourth proportional to 634,415.60, 951,616.92 and 213,688.64 is: 320,530.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,415.60 : 951,616.92 = 213,688.64 : x
  2. Step 2: Convert to fraction form
    634,415.60/951,616.92 = 213,688.64/x
  3. Step 3: Cross multiply
    634,415.60x = 951,616.92 × 213,688.64
  4. Step 4: Simplify right side
    634,415.60x = 203,349,725,435.79
  5. Step 5: Solve for x
    x = 203,349,725,435.79/634,415.60
  6. Step 6: Final answer
    x = 320,530.78

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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.