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Finding the Fourth Proportional to 634,632.48, 951,951.69 and 213,912

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Solution

The fourth proportional to 634,632.48, 951,951.69 and 213,912 is: 320,869.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,632.48 : 951,951.69 = 213,912 : x
  2. Step 2: Convert to fraction form
    634,632.48/951,951.69 = 213,912/x
  3. Step 3: Cross multiply
    634,632.48x = 951,951.69 × 213,912
  4. Step 4: Simplify right side
    634,632.48x = 203,633,889,911.28
  5. Step 5: Solve for x
    x = 203,633,889,911.28/634,632.48
  6. Step 6: Final answer
    x = 320,869.00

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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.