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Finding the Fourth Proportional to 338,679.21, 507,915.10 and 234,169.77

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Solution

The fourth proportional to 338,679.21, 507,915.10 and 234,169.77 is: 351,182.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,679.21 : 507,915.10 = 234,169.77 : x
  2. Step 2: Convert to fraction form
    338,679.21/507,915.10 = 234,169.77/x
  3. Step 3: Cross multiply
    338,679.21x = 507,915.10 × 234,169.77
  4. Step 4: Simplify right side
    338,679.21x = 118,938,360,975.68
  5. Step 5: Solve for x
    x = 118,938,360,975.68/338,679.21
  6. Step 6: Final answer
    x = 351,182.94

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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.