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Finding the Fourth Proportional to 555,480.72, 766,562.13 and 300,831.30

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Solution

The fourth proportional to 555,480.72, 766,562.13 and 300,831.30 is: 415,146.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,480.72 : 766,562.13 = 300,831.30 : x
  2. Step 2: Convert to fraction form
    555,480.72/766,562.13 = 300,831.30/x
  3. Step 3: Cross multiply
    555,480.72x = 766,562.13 × 300,831.30
  4. Step 4: Simplify right side
    555,480.72x = 230,605,882,098.67
  5. Step 5: Solve for x
    x = 230,605,882,098.67/555,480.72
  6. Step 6: Final answer
    x = 415,146.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.