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Finding the Fourth Proportional to 324,361.83, 447,829.94 and 290,311.26

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Solution

The fourth proportional to 324,361.83, 447,829.94 and 290,311.26 is: 400,818.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,361.83 : 447,829.94 = 290,311.26 : x
  2. Step 2: Convert to fraction form
    324,361.83/447,829.94 = 290,311.26/x
  3. Step 3: Cross multiply
    324,361.83x = 447,829.94 × 290,311.26
  4. Step 4: Simplify right side
    324,361.83x = 130,010,076,155.61
  5. Step 5: Solve for x
    x = 130,010,076,155.61/324,361.83
  6. Step 6: Final answer
    x = 400,818.05

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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.