Home / 287,470.07-393,835.42-276,695.86

Finding the Fourth Proportional to 287,470.07, 393,835.42 and 276,695.86

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Solution

The fourth proportional to 287,470.07, 393,835.42 and 276,695.86 is: 379,074.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,470.07 : 393,835.42 = 276,695.86 : x
  2. Step 2: Convert to fraction form
    287,470.07/393,835.42 = 276,695.86/x
  3. Step 3: Cross multiply
    287,470.07x = 393,835.42 × 276,695.86
  4. Step 4: Simplify right side
    287,470.07x = 108,972,628,266.18
  5. Step 5: Solve for x
    x = 108,972,628,266.18/287,470.07
  6. Step 6: Final answer
    x = 379,074.69

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.