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Finding the Fourth Proportional to 368,055.54, 507,916.71 and 206,910.90

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Solution

The fourth proportional to 368,055.54, 507,916.71 and 206,910.90 is: 285,537.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,055.54 : 507,916.71 = 206,910.90 : x
  2. Step 2: Convert to fraction form
    368,055.54/507,916.71 = 206,910.90/x
  3. Step 3: Cross multiply
    368,055.54x = 507,916.71 × 206,910.90
  4. Step 4: Simplify right side
    368,055.54x = 105,093,503,591.14
  5. Step 5: Solve for x
    x = 105,093,503,591.14/368,055.54
  6. Step 6: Final answer
    x = 285,537.08

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1.5x scale

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.