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Finding the Fourth Proportional to 478,818.80, 660,771.94 and 263,954.15

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Solution

The fourth proportional to 478,818.80, 660,771.94 and 263,954.15 is: 364,257.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,818.80 : 660,771.94 = 263,954.15 : x
  2. Step 2: Convert to fraction form
    478,818.80/660,771.94 = 263,954.15/x
  3. Step 3: Cross multiply
    478,818.80x = 660,771.94 × 263,954.15
  4. Step 4: Simplify right side
    478,818.80x = 174,413,494,774.51
  5. Step 5: Solve for x
    x = 174,413,494,774.51/478,818.80
  6. Step 6: Final answer
    x = 364,257.83

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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.