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Finding the Fourth Proportional to 484,449.20, 668,405.64 and 290,806.64

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Solution

The fourth proportional to 484,449.20, 668,405.64 and 290,806.64 is: 401,232.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,449.20 : 668,405.64 = 290,806.64 : x
  2. Step 2: Convert to fraction form
    484,449.20/668,405.64 = 290,806.64/x
  3. Step 3: Cross multiply
    484,449.20x = 668,405.64 × 290,806.64
  4. Step 4: Simplify right side
    484,449.20x = 194,376,798,325.45
  5. Step 5: Solve for x
    x = 194,376,798,325.45/484,449.20
  6. Step 6: Final answer
    x = 401,232.57

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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.