Home / 278,904.60-384,891.34-151,580.20

Finding the Fourth Proportional to 278,904.60, 384,891.34 and 151,580.20

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Solution

The fourth proportional to 278,904.60, 384,891.34 and 151,580.20 is: 209,182.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,904.60 : 384,891.34 = 151,580.20 : x
  2. Step 2: Convert to fraction form
    278,904.60/384,891.34 = 151,580.20/x
  3. Step 3: Cross multiply
    278,904.60x = 384,891.34 × 151,580.20
  4. Step 4: Simplify right side
    278,904.60x = 58,341,906,295.47
  5. Step 5: Solve for x
    x = 58,341,906,295.47/278,904.60
  6. Step 6: Final answer
    x = 209,182.30

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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.