Home / 208,181.76-312,583.68-205,071.36

Finding the Fourth Proportional to 208,181.76, 312,583.68 and 205,071.36

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Solution

The fourth proportional to 208,181.76, 312,583.68 and 205,071.36 is: 307,913.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,181.76 : 312,583.68 = 205,071.36 : x
  2. Step 2: Convert to fraction form
    208,181.76/312,583.68 = 205,071.36/x
  3. Step 3: Cross multiply
    208,181.76x = 312,583.68 × 205,071.36
  4. Step 4: Simplify right side
    208,181.76x = 64,101,960,371.40
  5. Step 5: Solve for x
    x = 64,101,960,371.40/208,181.76
  6. Step 6: Final answer
    x = 307,913.43

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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.