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Finding the Fourth Proportional to 326,670.45, 490,067.64 and 113,430.06

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Solution

The fourth proportional to 326,670.45, 490,067.64 and 113,430.06 is: 170,166.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,670.45 : 490,067.64 = 113,430.06 : x
  2. Step 2: Convert to fraction form
    326,670.45/490,067.64 = 113,430.06/x
  3. Step 3: Cross multiply
    326,670.45x = 490,067.64 × 113,430.06
  4. Step 4: Simplify right side
    326,670.45x = 55,588,401,809.26
  5. Step 5: Solve for x
    x = 55,588,401,809.26/326,670.45
  6. Step 6: Final answer
    x = 170,166.61

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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.