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Finding the Fourth Proportional to 445,469.60, 668,285.40 and 145,866.80

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Solution

The fourth proportional to 445,469.60, 668,285.40 and 145,866.80 is: 218,826.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,469.60 : 668,285.40 = 145,866.80 : x
  2. Step 2: Convert to fraction form
    445,469.60/668,285.40 = 145,866.80/x
  3. Step 3: Cross multiply
    445,469.60x = 668,285.40 × 145,866.80
  4. Step 4: Simplify right side
    445,469.60x = 97,480,652,784.72
  5. Step 5: Solve for x
    x = 97,480,652,784.72/445,469.60
  6. Step 6: Final answer
    x = 218,826.72

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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.