Home / 278,840.10-384,801.77-151,515.69

Finding the Fourth Proportional to 278,840.10, 384,801.77 and 151,515.69

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Solution

The fourth proportional to 278,840.10, 384,801.77 and 151,515.69 is: 209,092.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,840.10 : 384,801.77 = 151,515.69 : x
  2. Step 2: Convert to fraction form
    278,840.10/384,801.77 = 151,515.69/x
  3. Step 3: Cross multiply
    278,840.10x = 384,801.77 × 151,515.69
  4. Step 4: Simplify right side
    278,840.10x = 58,303,505,694.77
  5. Step 5: Solve for x
    x = 58,303,505,694.77/278,840.10
  6. Step 6: Final answer
    x = 209,092.97

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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.