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Finding the Fourth Proportional to 478,720.33, 660,625.88 and 263,880.38

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Solution

The fourth proportional to 478,720.33, 660,625.88 and 263,880.38 is: 364,150.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,720.33 : 660,625.88 = 263,880.38 : x
  2. Step 2: Convert to fraction form
    478,720.33/660,625.88 = 263,880.38/x
  3. Step 3: Cross multiply
    478,720.33x = 660,625.88 × 263,880.38
  4. Step 4: Simplify right side
    478,720.33x = 174,326,208,584.40
  5. Step 5: Solve for x
    x = 174,326,208,584.40/478,720.33
  6. Step 6: Final answer
    x = 364,150.42

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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.