Home / 399,178,238.40-599,215,255.20-308,702,923.20

Finding the Fourth Proportional to 399,178,238.40, 599,215,255.20 and 308,702,923.20

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Solution

The fourth proportional to 399,178,238.40, 599,215,255.20 and 308,702,923.20 is: 463,400,764.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,178,238.40 : 599,215,255.20 = 308,702,923.20 : x
  2. Step 2: Convert to fraction form
    399,178,238.40/599,215,255.20 = 308,702,923.20/x
  3. Step 3: Cross multiply
    399,178,238.40x = 599,215,255.20 × 308,702,923.20
  4. Step 4: Simplify right side
    399,178,238.40x = 184,979,500,906,274,016
  5. Step 5: Solve for x
    x = 184,979,500,906,274,016/399,178,238.40
  6. Step 6: Final answer
    x = 463,400,764.65

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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.