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Finding the Fourth Proportional to 351,456.65, 485,012.49 and 190,311.69

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Solution

The fourth proportional to 351,456.65, 485,012.49 and 190,311.69 is: 262,631.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,456.65 : 485,012.49 = 190,311.69 : x
  2. Step 2: Convert to fraction form
    351,456.65/485,012.49 = 190,311.69/x
  3. Step 3: Cross multiply
    351,456.65x = 485,012.49 × 190,311.69
  4. Step 4: Simplify right side
    351,456.65x = 92,303,546,643.01
  5. Step 5: Solve for x
    x = 92,303,546,643.01/351,456.65
  6. Step 6: Final answer
    x = 262,631.39

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1.5x scale

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.