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Finding the Fourth Proportional to 263,579, 363,738.48 and 142,720.26

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Solution

The fourth proportional to 263,579, 363,738.48 and 142,720.26 is: 196,953.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,579 : 363,738.48 = 142,720.26 : x
  2. Step 2: Convert to fraction form
    263,579/363,738.48 = 142,720.26/x
  3. Step 3: Cross multiply
    263,579x = 363,738.48 × 142,720.26
  4. Step 4: Simplify right side
    263,579x = 51,912,850,437.60
  5. Step 5: Solve for x
    x = 51,912,850,437.60/263,579
  6. Step 6: Final answer
    x = 196,953.67

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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.