Home / 278,736.60-384,647.64-157,889.04

Finding the Fourth Proportional to 278,736.60, 384,647.64 and 157,889.04

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Solution

The fourth proportional to 278,736.60, 384,647.64 and 157,889.04 is: 217,881.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,736.60 : 384,647.64 = 157,889.04 : x
  2. Step 2: Convert to fraction form
    278,736.60/384,647.64 = 157,889.04/x
  3. Step 3: Cross multiply
    278,736.60x = 384,647.64 × 157,889.04
  4. Step 4: Simplify right side
    278,736.60x = 60,731,646,617.87
  5. Step 5: Solve for x
    x = 60,731,646,617.87/278,736.60
  6. Step 6: Final answer
    x = 217,881.85

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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.