Home / 278,845.82-384,775.99-157,961.22

Finding the Fourth Proportional to 278,845.82, 384,775.99 and 157,961.22

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Solution

The fourth proportional to 278,845.82, 384,775.99 and 157,961.22 is: 217,968.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,845.82 : 384,775.99 = 157,961.22 : x
  2. Step 2: Convert to fraction form
    278,845.82/384,775.99 = 157,961.22/x
  3. Step 3: Cross multiply
    278,845.82x = 384,775.99 × 157,961.22
  4. Step 4: Simplify right side
    278,845.82x = 60,779,684,807.11
  5. Step 5: Solve for x
    x = 60,779,684,807.11/278,845.82
  6. Step 6: Final answer
    x = 217,968.79

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1.5x scale

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.