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Finding the Fourth Proportional to 368,114.78, 507,790.91 and 220,901.54

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Solution

The fourth proportional to 368,114.78, 507,790.91 and 220,901.54 is: 304,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,114.78 : 507,790.91 = 220,901.54 : x
  2. Step 2: Convert to fraction form
    368,114.78/507,790.91 = 220,901.54/x
  3. Step 3: Cross multiply
    368,114.78x = 507,790.91 × 220,901.54
  4. Step 4: Simplify right side
    368,114.78x = 112,171,795,290.06
  5. Step 5: Solve for x
    x = 112,171,795,290.06/368,114.78
  6. Step 6: Final answer
    x = 304,719.62

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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.