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Finding the Fourth Proportional to 382,634.56, 528,040.47 and 210,572.32

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Solution

The fourth proportional to 382,634.56, 528,040.47 and 210,572.32 is: 290,592.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,634.56 : 528,040.47 = 210,572.32 : x
  2. Step 2: Convert to fraction form
    382,634.56/528,040.47 = 210,572.32/x
  3. Step 3: Cross multiply
    382,634.56x = 528,040.47 × 210,572.32
  4. Step 4: Simplify right side
    382,634.56x = 111,190,706,821.79
  5. Step 5: Solve for x
    x = 111,190,706,821.79/382,634.56
  6. Step 6: Final answer
    x = 290,592.43

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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.