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Finding the Fourth Proportional to 313,868.01, 470,797.97 and 77,212.74

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Solution

The fourth proportional to 313,868.01, 470,797.97 and 77,212.74 is: 115,818.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,868.01 : 470,797.97 = 77,212.74 : x
  2. Step 2: Convert to fraction form
    313,868.01/470,797.97 = 77,212.74/x
  3. Step 3: Cross multiply
    313,868.01x = 470,797.97 × 77,212.74
  4. Step 4: Simplify right side
    313,868.01x = 36,351,600,864.07
  5. Step 5: Solve for x
    x = 36,351,600,864.07/313,868.01
  6. Step 6: Final answer
    x = 115,818.11

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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.