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Finding the Fourth Proportional to 313,376,908.70, 439,181,168.50 and 313,376,908.70

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Solution

The fourth proportional to 313,376,908.70, 439,181,168.50 and 313,376,908.70 is: 439,181,168.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,376,908.70 : 439,181,168.50 = 313,376,908.70 : x
  2. Step 2: Convert to fraction form
    313,376,908.70/439,181,168.50 = 313,376,908.70/x
  3. Step 3: Cross multiply
    313,376,908.70x = 439,181,168.50 × 313,376,908.70
  4. Step 4: Simplify right side
    313,376,908.70x = 137,629,236,943,783,808
  5. Step 5: Solve for x
    x = 137,629,236,943,783,808/313,376,908.70
  6. Step 6: Final answer
    x = 439,181,168.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.