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Finding the Fourth Proportional to 300,312.63, 414,450.68 and 172,986.03

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Solution

The fourth proportional to 300,312.63, 414,450.68 and 172,986.03 is: 238,731.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,312.63 : 414,450.68 = 172,986.03 : x
  2. Step 2: Convert to fraction form
    300,312.63/414,450.68 = 172,986.03/x
  3. Step 3: Cross multiply
    300,312.63x = 414,450.68 × 172,986.03
  4. Step 4: Simplify right side
    300,312.63x = 71,694,176,899.07
  5. Step 5: Solve for x
    x = 71,694,176,899.07/300,312.63
  6. Step 6: Final answer
    x = 238,731.81

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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.