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Finding the Fourth Proportional to 491,296.95, 678,003.03 and 276,444.63

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Solution

The fourth proportional to 491,296.95, 678,003.03 and 276,444.63 is: 381,501.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,296.95 : 678,003.03 = 276,444.63 : x
  2. Step 2: Convert to fraction form
    491,296.95/678,003.03 = 276,444.63/x
  3. Step 3: Cross multiply
    491,296.95x = 678,003.03 × 276,444.63
  4. Step 4: Simplify right side
    491,296.95x = 187,430,296,767.23
  5. Step 5: Solve for x
    x = 187,430,296,767.23/491,296.95
  6. Step 6: Final answer
    x = 381,501.04

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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.