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Finding the Fourth Proportional to 426,149.73, 639,114.03 and 126,559.89

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Solution

The fourth proportional to 426,149.73, 639,114.03 and 126,559.89 is: 189,807.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,149.73 : 639,114.03 = 126,559.89 : x
  2. Step 2: Convert to fraction form
    426,149.73/639,114.03 = 126,559.89/x
  3. Step 3: Cross multiply
    426,149.73x = 639,114.03 × 126,559.89
  4. Step 4: Simplify right side
    426,149.73x = 80,886,201,334.26
  5. Step 5: Solve for x
    x = 80,886,201,334.26/426,149.73
  6. Step 6: Final answer
    x = 189,807.00

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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.