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Finding the Fourth Proportional to 383,804.80, 575,221.20 and 146,831.20

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Solution

The fourth proportional to 383,804.80, 575,221.20 and 146,831.20 is: 220,060.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,804.80 : 575,221.20 = 146,831.20 : x
  2. Step 2: Convert to fraction form
    383,804.80/575,221.20 = 146,831.20/x
  3. Step 3: Cross multiply
    383,804.80x = 575,221.20 × 146,831.20
  4. Step 4: Simplify right side
    383,804.80x = 84,460,419,061.44
  5. Step 5: Solve for x
    x = 84,460,419,061.44/383,804.80
  6. Step 6: Final answer
    x = 220,060.87

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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.