Home / 384,806.57-531,036.41-212,721.75

Finding the Fourth Proportional to 384,806.57, 531,036.41 and 212,721.75

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Solution

The fourth proportional to 384,806.57, 531,036.41 and 212,721.75 is: 293,557.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,806.57 : 531,036.41 = 212,721.75 : x
  2. Step 2: Convert to fraction form
    384,806.57/531,036.41 = 212,721.75/x
  3. Step 3: Cross multiply
    384,806.57x = 531,036.41 × 212,721.75
  4. Step 4: Simplify right side
    384,806.57x = 112,962,993,385.31
  5. Step 5: Solve for x
    x = 112,962,993,385.31/384,806.57
  6. Step 6: Final answer
    x = 293,557.86

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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.