Home / 278,782.38-384,718.68-151,456.86

Finding the Fourth Proportional to 278,782.38, 384,718.68 and 151,456.86

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Solution

The fourth proportional to 278,782.38, 384,718.68 and 151,456.86 is: 209,009.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,782.38 : 384,718.68 = 151,456.86 : x
  2. Step 2: Convert to fraction form
    278,782.38/384,718.68 = 151,456.86/x
  3. Step 3: Cross multiply
    278,782.38x = 384,718.68 × 151,456.86
  4. Step 4: Simplify right side
    278,782.38x = 58,268,283,256.14
  5. Step 5: Solve for x
    x = 58,268,283,256.14/278,782.38
  6. Step 6: Final answer
    x = 209,009.92

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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.