Home / 278,946.36-384,943.68-151,621.56

Finding the Fourth Proportional to 278,946.36, 384,943.68 and 151,621.56

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Solution

The fourth proportional to 278,946.36, 384,943.68 and 151,621.56 is: 209,236.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,946.36 : 384,943.68 = 151,621.56 : x
  2. Step 2: Convert to fraction form
    278,946.36/384,943.68 = 151,621.56/x
  3. Step 3: Cross multiply
    278,946.36x = 384,943.68 × 151,621.56
  4. Step 4: Simplify right side
    278,946.36x = 58,365,761,273.74
  5. Step 5: Solve for x
    x = 58,365,761,273.74/278,946.36
  6. Step 6: Final answer
    x = 209,236.50

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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.