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Finding the Fourth Proportional to 426,316.26, 639,459.75 and 110,775.90

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Solution

The fourth proportional to 426,316.26, 639,459.75 and 110,775.90 is: 166,160.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,316.26 : 639,459.75 = 110,775.90 : x
  2. Step 2: Convert to fraction form
    426,316.26/639,459.75 = 110,775.90/x
  3. Step 3: Cross multiply
    426,316.26x = 639,459.75 × 110,775.90
  4. Step 4: Simplify right side
    426,316.26x = 70,836,729,320.03
  5. Step 5: Solve for x
    x = 70,836,729,320.03/426,316.26
  6. Step 6: Final answer
    x = 166,160.05

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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.