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Finding the Fourth Proportional to 278,632.87, 384,509.97 and 151,309.37

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Solution

The fourth proportional to 278,632.87, 384,509.97 and 151,309.37 is: 208,805.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,632.87 : 384,509.97 = 151,309.37 : x
  2. Step 2: Convert to fraction form
    278,632.87/384,509.97 = 151,309.37/x
  3. Step 3: Cross multiply
    278,632.87x = 384,509.97 × 151,309.37
  4. Step 4: Simplify right side
    278,632.87x = 58,179,962,280.69
  5. Step 5: Solve for x
    x = 58,179,962,280.69/278,632.87
  6. Step 6: Final answer
    x = 208,805.09

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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.