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Finding the Fourth Proportional to 368,181.17, 551,386.01 and 209,929.85

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Solution

The fourth proportional to 368,181.17, 551,386.01 and 209,929.85 is: 314,389.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,181.17 : 551,386.01 = 209,929.85 : x
  2. Step 2: Convert to fraction form
    368,181.17/551,386.01 = 209,929.85/x
  3. Step 3: Cross multiply
    368,181.17x = 551,386.01 × 209,929.85
  4. Step 4: Simplify right side
    368,181.17x = 115,752,378,564.82
  5. Step 5: Solve for x
    x = 115,752,378,564.82/368,181.17
  6. Step 6: Final answer
    x = 314,389.73

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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.