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Finding the Fourth Proportional to 478,480.66, 660,302.95 and 263,620.73

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Solution

The fourth proportional to 478,480.66, 660,302.95 and 263,620.73 is: 363,796.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,480.66 : 660,302.95 = 263,620.73 : x
  2. Step 2: Convert to fraction form
    478,480.66/660,302.95 = 263,620.73/x
  3. Step 3: Cross multiply
    478,480.66x = 660,302.95 × 263,620.73
  4. Step 4: Simplify right side
    478,480.66x = 174,069,542,398.64
  5. Step 5: Solve for x
    x = 174,069,542,398.64/478,480.66
  6. Step 6: Final answer
    x = 363,796.40

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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.