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Finding the Fourth Proportional to 208,068.20, 312,102.30 and 173,047.40

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Solution

The fourth proportional to 208,068.20, 312,102.30 and 173,047.40 is: 259,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,068.20 : 312,102.30 = 173,047.40 : x
  2. Step 2: Convert to fraction form
    208,068.20/312,102.30 = 173,047.40/x
  3. Step 3: Cross multiply
    208,068.20x = 312,102.30 × 173,047.40
  4. Step 4: Simplify right side
    208,068.20x = 54,008,491,549.02
  5. Step 5: Solve for x
    x = 54,008,491,549.02/208,068.20
  6. Step 6: Final answer
    x = 259,571.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.