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Finding the Fourth Proportional to 439,872, 607,026.60 and 238,668

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Solution

The fourth proportional to 439,872, 607,026.60 and 238,668 is: 329,363.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,872 : 607,026.60 = 238,668 : x
  2. Step 2: Convert to fraction form
    439,872/607,026.60 = 238,668/x
  3. Step 3: Cross multiply
    439,872x = 607,026.60 × 238,668
  4. Step 4: Simplify right side
    439,872x = 144,877,824,568.80
  5. Step 5: Solve for x
    x = 144,877,824,568.80/439,872
  6. Step 6: Final answer
    x = 329,363.60

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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.