Home / 399,178,223.40-599,215,232.70-308,702,908.20

Finding the Fourth Proportional to 399,178,223.40, 599,215,232.70 and 308,702,908.20

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Solution

The fourth proportional to 399,178,223.40, 599,215,232.70 and 308,702,908.20 is: 463,400,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,178,223.40 : 599,215,232.70 = 308,702,908.20 : x
  2. Step 2: Convert to fraction form
    399,178,223.40/599,215,232.70 = 308,702,908.20/x
  3. Step 3: Cross multiply
    399,178,223.40x = 599,215,232.70 × 308,702,908.20
  4. Step 4: Simplify right side
    399,178,223.40x = 184,979,484,972,229,760
  5. Step 5: Solve for x
    x = 184,979,484,972,229,760/399,178,223.40
  6. Step 6: Final answer
    x = 463,400,742.15

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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.