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Finding the Fourth Proportional to 325,399.65, 449,038.40 and 189,437.51

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Solution

The fourth proportional to 325,399.65, 449,038.40 and 189,437.51 is: 261,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,399.65 : 449,038.40 = 189,437.51 : x
  2. Step 2: Convert to fraction form
    325,399.65/449,038.40 = 189,437.51/x
  3. Step 3: Cross multiply
    325,399.65x = 449,038.40 × 189,437.51
  4. Step 4: Simplify right side
    325,399.65x = 85,064,713,198.00
  5. Step 5: Solve for x
    x = 85,064,713,198.00/325,399.65
  6. Step 6: Final answer
    x = 261,416.12

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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.