Home / 384,830.75-531,020.42-212,725.53

Finding the Fourth Proportional to 384,830.75, 531,020.42 and 212,725.53

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Solution

The fourth proportional to 384,830.75, 531,020.42 and 212,725.53 is: 293,535.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,830.75 : 531,020.42 = 212,725.53 : x
  2. Step 2: Convert to fraction form
    384,830.75/531,020.42 = 212,725.53/x
  3. Step 3: Cross multiply
    384,830.75x = 531,020.42 × 212,725.53
  4. Step 4: Simplify right side
    384,830.75x = 112,961,599,221.70
  5. Step 5: Solve for x
    x = 112,961,599,221.70/384,830.75
  6. Step 6: Final answer
    x = 293,535.80

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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.