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Finding the Fourth Proportional to 426,093.01, 639,030.16 and 126,504.08

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Solution

The fourth proportional to 426,093.01, 639,030.16 and 126,504.08 is: 189,723.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,093.01 : 639,030.16 = 126,504.08 : x
  2. Step 2: Convert to fraction form
    426,093.01/639,030.16 = 126,504.08/x
  3. Step 3: Cross multiply
    426,093.01x = 639,030.16 × 126,504.08
  4. Step 4: Simplify right side
    426,093.01x = 80,839,921,842.40
  5. Step 5: Solve for x
    x = 80,839,921,842.40/426,093.01
  6. Step 6: Final answer
    x = 189,723.65

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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.