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Finding the Fourth Proportional to 398,967.17, 550,571.88 and 226,885.03

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Solution

The fourth proportional to 398,967.17, 550,571.88 and 226,885.03 is: 313,099.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,967.17 : 550,571.88 = 226,885.03 : x
  2. Step 2: Convert to fraction form
    398,967.17/550,571.88 = 226,885.03/x
  3. Step 3: Cross multiply
    398,967.17x = 550,571.88 × 226,885.03
  4. Step 4: Simplify right side
    398,967.17x = 124,916,516,985.35
  5. Step 5: Solve for x
    x = 124,916,516,985.35/398,967.17
  6. Step 6: Final answer
    x = 313,099.74

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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.