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Finding the Fourth Proportional to 338,516.60, 507,629.10 and 169,971.80

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Solution

The fourth proportional to 338,516.60, 507,629.10 and 169,971.80 is: 254,884.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,516.60 : 507,629.10 = 169,971.80 : x
  2. Step 2: Convert to fraction form
    338,516.60/507,629.10 = 169,971.80/x
  3. Step 3: Cross multiply
    338,516.60x = 507,629.10 × 169,971.80
  4. Step 4: Simplify right side
    338,516.60x = 86,282,631,859.38
  5. Step 5: Solve for x
    x = 86,282,631,859.38/338,516.60
  6. Step 6: Final answer
    x = 254,884.49

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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.