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Finding the Fourth Proportional to 478,843.18, 660,808.11 and 263,990.95

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Solution

The fourth proportional to 478,843.18, 660,808.11 and 263,990.95 is: 364,310.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,843.18 : 660,808.11 = 263,990.95 : x
  2. Step 2: Convert to fraction form
    478,843.18/660,808.11 = 263,990.95/x
  3. Step 3: Cross multiply
    478,843.18x = 660,808.11 × 263,990.95
  4. Step 4: Simplify right side
    478,843.18x = 174,447,360,726.61
  5. Step 5: Solve for x
    x = 174,447,360,726.61/478,843.18
  6. Step 6: Final answer
    x = 364,310.00

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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.