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Finding the Fourth Proportional to 439,604, 606,653.88 and 238,400

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Solution

The fourth proportional to 439,604, 606,653.88 and 238,400 is: 328,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,604 : 606,653.88 = 238,400 : x
  2. Step 2: Convert to fraction form
    439,604/606,653.88 = 238,400/x
  3. Step 3: Cross multiply
    439,604x = 606,653.88 × 238,400
  4. Step 4: Simplify right side
    439,604x = 144,626,284,992
  5. Step 5: Solve for x
    x = 144,626,284,992/439,604
  6. Step 6: Final answer
    x = 328,992.20

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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.