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Finding the Fourth Proportional to 338,452.72, 507,679.76 and 85,733.26

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Solution

The fourth proportional to 338,452.72, 507,679.76 and 85,733.26 is: 128,600.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,452.72 : 507,679.76 = 85,733.26 : x
  2. Step 2: Convert to fraction form
    338,452.72/507,679.76 = 85,733.26/x
  3. Step 3: Cross multiply
    338,452.72x = 507,679.76 × 85,733.26
  4. Step 4: Simplify right side
    338,452.72x = 43,525,040,860.82
  5. Step 5: Solve for x
    x = 43,525,040,860.82/338,452.72
  6. Step 6: Final answer
    x = 128,600.06

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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.