Home / 278,705.37-384,618.48-157,871.75

Finding the Fourth Proportional to 278,705.37, 384,618.48 and 157,871.75

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Solution

The fourth proportional to 278,705.37, 384,618.48 and 157,871.75 is: 217,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,705.37 : 384,618.48 = 157,871.75 : x
  2. Step 2: Convert to fraction form
    278,705.37/384,618.48 = 157,871.75/x
  3. Step 3: Cross multiply
    278,705.37x = 384,618.48 × 157,871.75
  4. Step 4: Simplify right side
    278,705.37x = 60,720,392,519.94
  5. Step 5: Solve for x
    x = 60,720,392,519.94/278,705.37
  6. Step 6: Final answer
    x = 217,865.89

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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.