Home / 208,840.20-313,260.30-68,603.40

Finding the Fourth Proportional to 208,840.20, 313,260.30 and 68,603.40

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Solution

The fourth proportional to 208,840.20, 313,260.30 and 68,603.40 is: 102,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,840.20 : 313,260.30 = 68,603.40 : x
  2. Step 2: Convert to fraction form
    208,840.20/313,260.30 = 68,603.40/x
  3. Step 3: Cross multiply
    208,840.20x = 313,260.30 × 68,603.40
  4. Step 4: Simplify right side
    208,840.20x = 21,490,721,665.02
  5. Step 5: Solve for x
    x = 21,490,721,665.02/208,840.20
  6. Step 6: Final answer
    x = 102,905.10

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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.