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Finding the Fourth Proportional to 426,570.66, 639,853.92 and 111,027.06

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Solution

The fourth proportional to 426,570.66, 639,853.92 and 111,027.06 is: 166,540.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,570.66 : 639,853.92 = 111,027.06 : x
  2. Step 2: Convert to fraction form
    426,570.66/639,853.92 = 111,027.06/x
  3. Step 3: Cross multiply
    426,570.66x = 639,853.92 × 111,027.06
  4. Step 4: Simplify right side
    426,570.66x = 71,041,099,567.08
  5. Step 5: Solve for x
    x = 71,041,099,567.08/426,570.66
  6. Step 6: Final answer
    x = 166,540.05

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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.