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Finding the Fourth Proportional to 404,322.20, 606,920.70 and 254,731.40

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Solution

The fourth proportional to 404,322.20, 606,920.70 and 254,731.40 is: 382,372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,322.20 : 606,920.70 = 254,731.40 : x
  2. Step 2: Convert to fraction form
    404,322.20/606,920.70 = 254,731.40/x
  3. Step 3: Cross multiply
    404,322.20x = 606,920.70 × 254,731.40
  4. Step 4: Simplify right side
    404,322.20x = 154,601,759,599.98
  5. Step 5: Solve for x
    x = 154,601,759,599.98/404,322.20
  6. Step 6: Final answer
    x = 382,372.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.