Home / 278,916.09-384,904.25-151,591.69

Finding the Fourth Proportional to 278,916.09, 384,904.25 and 151,591.69

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Solution

The fourth proportional to 278,916.09, 384,904.25 and 151,591.69 is: 209,196.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,916.09 : 384,904.25 = 151,591.69 : x
  2. Step 2: Convert to fraction form
    278,916.09/384,904.25 = 151,591.69/x
  3. Step 3: Cross multiply
    278,916.09x = 384,904.25 × 151,591.69
  4. Step 4: Simplify right side
    278,916.09x = 58,348,285,745.68
  5. Step 5: Solve for x
    x = 58,348,285,745.68/278,916.09
  6. Step 6: Final answer
    x = 209,196.56

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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.