Home / 385,279.62-531,725.88-221,941.80

Finding the Fourth Proportional to 385,279.62, 531,725.88 and 221,941.80

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Solution

The fourth proportional to 385,279.62, 531,725.88 and 221,941.80 is: 306,302.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,279.62 : 531,725.88 = 221,941.80 : x
  2. Step 2: Convert to fraction form
    385,279.62/531,725.88 = 221,941.80/x
  3. Step 3: Cross multiply
    385,279.62x = 531,725.88 × 221,941.80
  4. Step 4: Simplify right side
    385,279.62x = 118,012,198,913.78
  5. Step 5: Solve for x
    x = 118,012,198,913.78/385,279.62
  6. Step 6: Final answer
    x = 306,302.73

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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.