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Finding the Fourth Proportional to 326,577.56, 490,017 and 149,138.96

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Solution

The fourth proportional to 326,577.56, 490,017 and 149,138.96 is: 223,777.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,577.56 : 490,017 = 149,138.96 : x
  2. Step 2: Convert to fraction form
    326,577.56/490,017 = 149,138.96/x
  3. Step 3: Cross multiply
    326,577.56x = 490,017 × 149,138.96
  4. Step 4: Simplify right side
    326,577.56x = 73,080,625,762.32
  5. Step 5: Solve for x
    x = 73,080,625,762.32/326,577.56
  6. Step 6: Final answer
    x = 223,777.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.