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Finding the Fourth Proportional to 384,954.52, 531,190.64 and 212,860.71

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Solution

The fourth proportional to 384,954.52, 531,190.64 and 212,860.71 is: 293,722.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,954.52 : 531,190.64 = 212,860.71 : x
  2. Step 2: Convert to fraction form
    384,954.52/531,190.64 = 212,860.71/x
  3. Step 3: Cross multiply
    384,954.52x = 531,190.64 × 212,860.71
  4. Step 4: Simplify right side
    384,954.52x = 113,069,614,119.80
  5. Step 5: Solve for x
    x = 113,069,614,119.80/384,954.52
  6. Step 6: Final answer
    x = 293,722.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.