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Finding the Fourth Proportional to 299,753.88, 447,444.03 and 261,919.50

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Solution

The fourth proportional to 299,753.88, 447,444.03 and 261,919.50 is: 390,968.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,753.88 : 447,444.03 = 261,919.50 : x
  2. Step 2: Convert to fraction form
    299,753.88/447,444.03 = 261,919.50/x
  3. Step 3: Cross multiply
    299,753.88x = 447,444.03 × 261,919.50
  4. Step 4: Simplify right side
    299,753.88x = 117,194,316,615.59
  5. Step 5: Solve for x
    x = 117,194,316,615.59/299,753.88
  6. Step 6: Final answer
    x = 390,968.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.