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Finding the Fourth Proportional to 426,396.96, 639,459.36 and 173,676.96

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Solution

The fourth proportional to 426,396.96, 639,459.36 and 173,676.96 is: 260,460.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,396.96 : 639,459.36 = 173,676.96 : x
  2. Step 2: Convert to fraction form
    426,396.96/639,459.36 = 173,676.96/x
  3. Step 3: Cross multiply
    426,396.96x = 639,459.36 × 173,676.96
  4. Step 4: Simplify right side
    426,396.96x = 111,059,357,688.35
  5. Step 5: Solve for x
    x = 111,059,357,688.35/426,396.96
  6. Step 6: Final answer
    x = 260,460.01

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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.