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Finding the Fourth Proportional to 318,491.84, 439,533.19 and 197,672.04

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Solution

The fourth proportional to 318,491.84, 439,533.19 and 197,672.04 is: 272,796.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,491.84 : 439,533.19 = 197,672.04 : x
  2. Step 2: Convert to fraction form
    318,491.84/439,533.19 = 197,672.04/x
  3. Step 3: Cross multiply
    318,491.84x = 439,533.19 × 197,672.04
  4. Step 4: Simplify right side
    318,491.84x = 86,883,422,315.01
  5. Step 5: Solve for x
    x = 86,883,422,315.01/318,491.84
  6. Step 6: Final answer
    x = 272,796.38

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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.