Home / 382,725.47-528,126.84-221,591.43

Finding the Fourth Proportional to 382,725.47, 528,126.84 and 221,591.43

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Solution

The fourth proportional to 382,725.47, 528,126.84 and 221,591.43 is: 305,776.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,725.47 : 528,126.84 = 221,591.43 : x
  2. Step 2: Convert to fraction form
    382,725.47/528,126.84 = 221,591.43/x
  3. Step 3: Cross multiply
    382,725.47x = 528,126.84 × 221,591.43
  4. Step 4: Simplify right side
    382,725.47x = 117,028,381,696.98
  5. Step 5: Solve for x
    x = 117,028,381,696.98/382,725.47
  6. Step 6: Final answer
    x = 305,776.31

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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.