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Finding the Fourth Proportional to 451,435.84, 622,858.08 and 281,697.28

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Solution

The fourth proportional to 451,435.84, 622,858.08 and 281,697.28 is: 388,665.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,435.84 : 622,858.08 = 281,697.28 : x
  2. Step 2: Convert to fraction form
    451,435.84/622,858.08 = 281,697.28/x
  3. Step 3: Cross multiply
    451,435.84x = 622,858.08 × 281,697.28
  4. Step 4: Simplify right side
    451,435.84x = 175,457,426,962.02
  5. Step 5: Solve for x
    x = 175,457,426,962.02/451,435.84
  6. Step 6: Final answer
    x = 388,665.26

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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.