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Finding the Fourth Proportional to 318,493.84, 439,535.95 and 197,674.04

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Solution

The fourth proportional to 318,493.84, 439,535.95 and 197,674.04 is: 272,799.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,493.84 : 439,535.95 = 197,674.04 : x
  2. Step 2: Convert to fraction form
    318,493.84/439,535.95 = 197,674.04/x
  3. Step 3: Cross multiply
    318,493.84x = 439,535.95 × 197,674.04
  4. Step 4: Simplify right side
    318,493.84x = 86,884,846,961.74
  5. Step 5: Solve for x
    x = 86,884,846,961.74/318,493.84
  6. Step 6: Final answer
    x = 272,799.14

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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.