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Finding the Fourth Proportional to 478,540.58, 660,415.41 and 263,680.58

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Solution

The fourth proportional to 478,540.58, 660,415.41 and 263,680.58 is: 363,895.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,540.58 : 660,415.41 = 263,680.58 : x
  2. Step 2: Convert to fraction form
    478,540.58/660,415.41 = 263,680.58/x
  3. Step 3: Cross multiply
    478,540.58x = 660,415.41 × 263,680.58
  4. Step 4: Simplify right side
    478,540.58x = 174,138,720,000.78
  5. Step 5: Solve for x
    x = 174,138,720,000.78/478,540.58
  6. Step 6: Final answer
    x = 363,895.41

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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.