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Finding the Fourth Proportional to 382,954.30, 528,132.90 and 239,727.40

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Solution

The fourth proportional to 382,954.30, 528,132.90 and 239,727.40 is: 330,608.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,954.30 : 528,132.90 = 239,727.40 : x
  2. Step 2: Convert to fraction form
    382,954.30/528,132.90 = 239,727.40/x
  3. Step 3: Cross multiply
    382,954.30x = 528,132.90 × 239,727.40
  4. Step 4: Simplify right side
    382,954.30x = 126,607,926,971.46
  5. Step 5: Solve for x
    x = 126,607,926,971.46/382,954.30
  6. Step 6: Final answer
    x = 330,608.45

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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.