Home / 384,905.12-531,159.62-212,818.55

Finding the Fourth Proportional to 384,905.12, 531,159.62 and 212,818.55

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Solution

The fourth proportional to 384,905.12, 531,159.62 and 212,818.55 is: 293,684.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,905.12 : 531,159.62 = 212,818.55 : x
  2. Step 2: Convert to fraction form
    384,905.12/531,159.62 = 212,818.55/x
  3. Step 3: Cross multiply
    384,905.12x = 531,159.62 × 212,818.55
  4. Step 4: Simplify right side
    384,905.12x = 113,040,616,427.06
  5. Step 5: Solve for x
    x = 113,040,616,427.06/384,905.12
  6. Step 6: Final answer
    x = 293,684.37

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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.