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Finding the Fourth Proportional to 481,978.20, 722,967.30 and 304,831.20

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Solution

The fourth proportional to 481,978.20, 722,967.30 and 304,831.20 is: 457,246.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,978.20 : 722,967.30 = 304,831.20 : x
  2. Step 2: Convert to fraction form
    481,978.20/722,967.30 = 304,831.20/x
  3. Step 3: Cross multiply
    481,978.20x = 722,967.30 × 304,831.20
  4. Step 4: Simplify right side
    481,978.20x = 220,382,989,619.76
  5. Step 5: Solve for x
    x = 220,382,989,619.76/481,978.20
  6. Step 6: Final answer
    x = 457,246.80

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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.