Home / 278,471.09-384,279.82-151,143.95

Finding the Fourth Proportional to 278,471.09, 384,279.82 and 151,143.95

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Solution

The fourth proportional to 278,471.09, 384,279.82 and 151,143.95 is: 208,573.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,471.09 : 384,279.82 = 151,143.95 : x
  2. Step 2: Convert to fraction form
    278,471.09/384,279.82 = 151,143.95/x
  3. Step 3: Cross multiply
    278,471.09x = 384,279.82 × 151,143.95
  4. Step 4: Simplify right side
    278,471.09x = 58,081,570,482.93
  5. Step 5: Solve for x
    x = 58,081,570,482.93/278,471.09
  6. Step 6: Final answer
    x = 208,573.07

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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.