Home / 278,781.40-384,716.28-151,458.04

Finding the Fourth Proportional to 278,781.40, 384,716.28 and 151,458.04

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Solution

The fourth proportional to 278,781.40, 384,716.28 and 151,458.04 is: 209,010.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,781.40 : 384,716.28 = 151,458.04 : x
  2. Step 2: Convert to fraction form
    278,781.40/384,716.28 = 151,458.04/x
  3. Step 3: Cross multiply
    278,781.40x = 384,716.28 × 151,458.04
  4. Step 4: Simplify right side
    278,781.40x = 58,268,373,724.89
  5. Step 5: Solve for x
    x = 58,268,373,724.89/278,781.40
  6. Step 6: Final answer
    x = 209,010.98

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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.