Home / 278,840.20-384,801.78-151,515.79

Finding the Fourth Proportional to 278,840.20, 384,801.78 and 151,515.79

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Solution

The fourth proportional to 278,840.20, 384,801.78 and 151,515.79 is: 209,093.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,840.20 : 384,801.78 = 151,515.79 : x
  2. Step 2: Convert to fraction form
    278,840.20/384,801.78 = 151,515.79/x
  3. Step 3: Cross multiply
    278,840.20x = 384,801.78 × 151,515.79
  4. Step 4: Simplify right side
    278,840.20x = 58,303,545,903.36
  5. Step 5: Solve for x
    x = 58,303,545,903.36/278,840.20
  6. Step 6: Final answer
    x = 209,093.04

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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.