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Finding the Fourth Proportional to 325,390.12, 448,806.90 and 298,619.08

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Solution

The fourth proportional to 325,390.12, 448,806.90 and 298,619.08 is: 411,881.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,390.12 : 448,806.90 = 298,619.08 : x
  2. Step 2: Convert to fraction form
    325,390.12/448,806.90 = 298,619.08/x
  3. Step 3: Cross multiply
    325,390.12x = 448,806.90 × 298,619.08
  4. Step 4: Simplify right side
    325,390.12x = 134,022,303,575.65
  5. Step 5: Solve for x
    x = 134,022,303,575.65/325,390.12
  6. Step 6: Final answer
    x = 411,881.91

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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.