Home / 278,884.10-384,751.40-206,460.33

Finding the Fourth Proportional to 278,884.10, 384,751.40 and 206,460.33

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Solution

The fourth proportional to 278,884.10, 384,751.40 and 206,460.33 is: 284,834.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,884.10 : 384,751.40 = 206,460.33 : x
  2. Step 2: Convert to fraction form
    278,884.10/384,751.40 = 206,460.33/x
  3. Step 3: Cross multiply
    278,884.10x = 384,751.40 × 206,460.33
  4. Step 4: Simplify right side
    278,884.10x = 79,435,899,979.66
  5. Step 5: Solve for x
    x = 79,435,899,979.66/278,884.10
  6. Step 6: Final answer
    x = 284,834.82

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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.