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Finding the Fourth Proportional to 382,941.06, 528,529.52 and 221,796.06

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Solution

The fourth proportional to 382,941.06, 528,529.52 and 221,796.06 is: 306,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,941.06 : 528,529.52 = 221,796.06 : x
  2. Step 2: Convert to fraction form
    382,941.06/528,529.52 = 221,796.06/x
  3. Step 3: Cross multiply
    382,941.06x = 528,529.52 × 221,796.06
  4. Step 4: Simplify right side
    382,941.06x = 117,225,765,129.69
  5. Step 5: Solve for x
    x = 117,225,765,129.69/382,941.06
  6. Step 6: Final answer
    x = 306,119.60

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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.