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Finding the Fourth Proportional to 478,865.21, 660,838.44 and 264,012.95

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Solution

The fourth proportional to 478,865.21, 660,838.44 and 264,012.95 is: 364,340.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,865.21 : 660,838.44 = 264,012.95 : x
  2. Step 2: Convert to fraction form
    478,865.21/660,838.44 = 264,012.95/x
  3. Step 3: Cross multiply
    478,865.21x = 660,838.44 × 264,012.95
  4. Step 4: Simplify right side
    478,865.21x = 174,469,902,713.61
  5. Step 5: Solve for x
    x = 174,469,902,713.61/478,865.21
  6. Step 6: Final answer
    x = 364,340.32

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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.