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Finding the Fourth Proportional to 644,677.79, 967,133.41 and 212,418.34

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Solution

The fourth proportional to 644,677.79, 967,133.41 and 212,418.34 is: 318,665.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,677.79 : 967,133.41 = 212,418.34 : x
  2. Step 2: Convert to fraction form
    644,677.79/967,133.41 = 212,418.34/x
  3. Step 3: Cross multiply
    644,677.79x = 967,133.41 × 212,418.34
  4. Step 4: Simplify right side
    644,677.79x = 205,436,871,756.71
  5. Step 5: Solve for x
    x = 205,436,871,756.71/644,677.79
  6. Step 6: Final answer
    x = 318,665.97

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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.