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Finding the Fourth Proportional to 478,296.88, 660,079.64 and 263,436.86

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Solution

The fourth proportional to 478,296.88, 660,079.64 and 263,436.86 is: 363,559.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,296.88 : 660,079.64 = 263,436.86 : x
  2. Step 2: Convert to fraction form
    478,296.88/660,079.64 = 263,436.86/x
  3. Step 3: Cross multiply
    478,296.88x = 660,079.64 × 263,436.86
  4. Step 4: Simplify right side
    478,296.88x = 173,889,306,394.35
  5. Step 5: Solve for x
    x = 173,889,306,394.35/478,296.88
  6. Step 6: Final answer
    x = 363,559.36

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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.