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Finding the Fourth Proportional to 478,761.42, 660,690.60 and 263,905.07

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Solution

The fourth proportional to 478,761.42, 660,690.60 and 263,905.07 is: 364,188.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,761.42 : 660,690.60 = 263,905.07 : x
  2. Step 2: Convert to fraction form
    478,761.42/660,690.60 = 263,905.07/x
  3. Step 3: Cross multiply
    478,761.42x = 660,690.60 × 263,905.07
  4. Step 4: Simplify right side
    478,761.42x = 174,359,595,737.89
  5. Step 5: Solve for x
    x = 174,359,595,737.89/478,761.42
  6. Step 6: Final answer
    x = 364,188.90

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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.