Home / 278,455.45-384,268.71-151,131.05

Finding the Fourth Proportional to 278,455.45, 384,268.71 and 151,131.05

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Solution

The fourth proportional to 278,455.45, 384,268.71 and 151,131.05 is: 208,560.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,455.45 : 384,268.71 = 151,131.05 : x
  2. Step 2: Convert to fraction form
    278,455.45/384,268.71 = 151,131.05/x
  3. Step 3: Cross multiply
    278,455.45x = 384,268.71 × 151,131.05
  4. Step 4: Simplify right side
    278,455.45x = 58,074,930,947.45
  5. Step 5: Solve for x
    x = 58,074,930,947.45/278,455.45
  6. Step 6: Final answer
    x = 208,560.94

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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.