Home / 219,815.62-303,365.72-138,157.16

Finding the Fourth Proportional to 219,815.62, 303,365.72 and 138,157.16

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Solution

The fourth proportional to 219,815.62, 303,365.72 and 138,157.16 is: 190,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,815.62 : 303,365.72 = 138,157.16 : x
  2. Step 2: Convert to fraction form
    219,815.62/303,365.72 = 138,157.16/x
  3. Step 3: Cross multiply
    219,815.62x = 303,365.72 × 138,157.16
  4. Step 4: Simplify right side
    219,815.62x = 41,912,146,316.56
  5. Step 5: Solve for x
    x = 41,912,146,316.56/219,815.62
  6. Step 6: Final answer
    x = 190,669.55

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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.