Home / 278,661.33-384,557.09-151,336.91

Finding the Fourth Proportional to 278,661.33, 384,557.09 and 151,336.91

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Solution

The fourth proportional to 278,661.33, 384,557.09 and 151,336.91 is: 208,847.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,661.33 : 384,557.09 = 151,336.91 : x
  2. Step 2: Convert to fraction form
    278,661.33/384,557.09 = 151,336.91/x
  3. Step 3: Cross multiply
    278,661.33x = 384,557.09 × 151,336.91
  4. Step 4: Simplify right side
    278,661.33x = 58,197,681,923.90
  5. Step 5: Solve for x
    x = 58,197,681,923.90/278,661.33
  6. Step 6: Final answer
    x = 208,847.36

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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.