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Finding the Fourth Proportional to 481,293.39, 663,894.30 and 309,153.42

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Solution

The fourth proportional to 481,293.39, 663,894.30 and 309,153.42 is: 426,445.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,293.39 : 663,894.30 = 309,153.42 : x
  2. Step 2: Convert to fraction form
    481,293.39/663,894.30 = 309,153.42/x
  3. Step 3: Cross multiply
    481,293.39x = 663,894.30 × 309,153.42
  4. Step 4: Simplify right side
    481,293.39x = 205,245,193,363.51
  5. Step 5: Solve for x
    x = 205,245,193,363.51/481,293.39
  6. Step 6: Final answer
    x = 426,445.07

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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.