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Finding the Fourth Proportional to 312,289.99, 468,433.41 and 75,632.66

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Solution

The fourth proportional to 312,289.99, 468,433.41 and 75,632.66 is: 113,448.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,289.99 : 468,433.41 = 75,632.66 : x
  2. Step 2: Convert to fraction form
    312,289.99/468,433.41 = 75,632.66/x
  3. Step 3: Cross multiply
    312,289.99x = 468,433.41 × 75,632.66
  4. Step 4: Simplify right side
    312,289.99x = 35,428,864,831.17
  5. Step 5: Solve for x
    x = 35,428,864,831.17/312,289.99
  6. Step 6: Final answer
    x = 113,448.61

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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.