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Finding the Fourth Proportional to 483,994.49, 667,639.98 and 290,350.67

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Solution

The fourth proportional to 483,994.49, 667,639.98 and 290,350.67 is: 400,520.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,994.49 : 667,639.98 = 290,350.67 : x
  2. Step 2: Convert to fraction form
    483,994.49/667,639.98 = 290,350.67/x
  3. Step 3: Cross multiply
    483,994.49x = 667,639.98 × 290,350.67
  4. Step 4: Simplify right side
    483,994.49x = 193,849,712,173.59
  5. Step 5: Solve for x
    x = 193,849,712,173.59/483,994.49
  6. Step 6: Final answer
    x = 400,520.50

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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.