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Finding the Fourth Proportional to 445,826, 668,777.88 and 113,402

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Solution

The fourth proportional to 445,826, 668,777.88 and 113,402 is: 170,112.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,826 : 668,777.88 = 113,402 : x
  2. Step 2: Convert to fraction form
    445,826/668,777.88 = 113,402/x
  3. Step 3: Cross multiply
    445,826x = 668,777.88 × 113,402
  4. Step 4: Simplify right side
    445,826x = 75,840,749,147.76
  5. Step 5: Solve for x
    x = 75,840,749,147.76/445,826
  6. Step 6: Final answer
    x = 170,112.89

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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.