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Finding the Fourth Proportional to 449,634.93, 674,784.99 and 212,978.13

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Solution

The fourth proportional to 449,634.93, 674,784.99 and 212,978.13 is: 319,624.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,634.93 : 674,784.99 = 212,978.13 : x
  2. Step 2: Convert to fraction form
    449,634.93/674,784.99 = 212,978.13/x
  3. Step 3: Cross multiply
    449,634.93x = 674,784.99 × 212,978.13
  4. Step 4: Simplify right side
    449,634.93x = 143,714,445,322.27
  5. Step 5: Solve for x
    x = 143,714,445,322.27/449,634.93
  6. Step 6: Final answer
    x = 319,624.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.