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Finding the Fourth Proportional to 382,954.50, 528,489.37 and 239,668.74

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Solution

The fourth proportional to 382,954.50, 528,489.37 and 239,668.74 is: 330,750.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,954.50 : 528,489.37 = 239,668.74 : x
  2. Step 2: Convert to fraction form
    382,954.50/528,489.37 = 239,668.74/x
  3. Step 3: Cross multiply
    382,954.50x = 528,489.37 × 239,668.74
  4. Step 4: Simplify right side
    382,954.50x = 126,662,381,411.29
  5. Step 5: Solve for x
    x = 126,662,381,411.29/382,954.50
  6. Step 6: Final answer
    x = 330,750.47

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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.