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Finding the Fourth Proportional to 458,918.84, 687,153.54 and 269,223.32

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Solution

The fourth proportional to 458,918.84, 687,153.54 and 269,223.32 is: 403,116.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,918.84 : 687,153.54 = 269,223.32 : x
  2. Step 2: Convert to fraction form
    458,918.84/687,153.54 = 269,223.32/x
  3. Step 3: Cross multiply
    458,918.84x = 687,153.54 × 269,223.32
  4. Step 4: Simplify right side
    458,918.84x = 184,997,757,388.55
  5. Step 5: Solve for x
    x = 184,997,757,388.55/458,918.84
  6. Step 6: Final answer
    x = 403,116.50

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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.