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Finding the Fourth Proportional to 144,775.60, 217,163.40 and 39,605.20

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Solution

The fourth proportional to 144,775.60, 217,163.40 and 39,605.20 is: 59,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,775.60 : 217,163.40 = 39,605.20 : x
  2. Step 2: Convert to fraction form
    144,775.60/217,163.40 = 39,605.20/x
  3. Step 3: Cross multiply
    144,775.60x = 217,163.40 × 39,605.20
  4. Step 4: Simplify right side
    144,775.60x = 8,600,799,889.68
  5. Step 5: Solve for x
    x = 8,600,799,889.68/144,775.60
  6. Step 6: Final answer
    x = 59,407.80

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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.