Home / 278,584.48-384,425.58-157,698.05

Finding the Fourth Proportional to 278,584.48, 384,425.58 and 157,698.05

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Solution

The fourth proportional to 278,584.48, 384,425.58 and 157,698.05 is: 217,611.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,584.48 : 384,425.58 = 157,698.05 : x
  2. Step 2: Convert to fraction form
    278,584.48/384,425.58 = 157,698.05/x
  3. Step 3: Cross multiply
    278,584.48x = 384,425.58 × 157,698.05
  4. Step 4: Simplify right side
    278,584.48x = 60,623,164,336.12
  5. Step 5: Solve for x
    x = 60,623,164,336.12/278,584.48
  6. Step 6: Final answer
    x = 217,611.42

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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.