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Finding the Fourth Proportional to 478,721.33, 660,627.25 and 263,881.38

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Solution

The fourth proportional to 478,721.33, 660,627.25 and 263,881.38 is: 364,151.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,721.33 : 660,627.25 = 263,881.38 : x
  2. Step 2: Convert to fraction form
    478,721.33/660,627.25 = 263,881.38/x
  3. Step 3: Cross multiply
    478,721.33x = 660,627.25 × 263,881.38
  4. Step 4: Simplify right side
    478,721.33x = 174,327,230,395.61
  5. Step 5: Solve for x
    x = 174,327,230,395.61/478,721.33
  6. Step 6: Final answer
    x = 364,151.79

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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.