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Finding the Fourth Proportional to 382,759.61, 528,173.93 and 221,625.56

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Solution

The fourth proportional to 382,759.61, 528,173.93 and 221,625.56 is: 305,823.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,759.61 : 528,173.93 = 221,625.56 : x
  2. Step 2: Convert to fraction form
    382,759.61/528,173.93 = 221,625.56/x
  3. Step 3: Cross multiply
    382,759.61x = 528,173.93 × 221,625.56
  4. Step 4: Simplify right side
    382,759.61x = 117,056,839,264.65
  5. Step 5: Solve for x
    x = 117,056,839,264.65/382,759.61
  6. Step 6: Final answer
    x = 305,823.39

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1.5x scale

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.