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Finding the Fourth Proportional to 347,615.76, 479,926.56 and 238,907.28

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Solution

The fourth proportional to 347,615.76, 479,926.56 and 238,907.28 is: 329,841.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,615.76 : 479,926.56 = 238,907.28 : x
  2. Step 2: Convert to fraction form
    347,615.76/479,926.56 = 238,907.28/x
  3. Step 3: Cross multiply
    347,615.76x = 479,926.56 × 238,907.28
  4. Step 4: Simplify right side
    347,615.76x = 114,657,949,049.36
  5. Step 5: Solve for x
    x = 114,657,949,049.36/347,615.76
  6. Step 6: Final answer
    x = 329,841.06

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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.