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Finding the Fourth Proportional to 338,414.40, 507,427.20 and 101,721.60

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Solution

The fourth proportional to 338,414.40, 507,427.20 and 101,721.60 is: 152,523.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,414.40 : 507,427.20 = 101,721.60 : x
  2. Step 2: Convert to fraction form
    338,414.40/507,427.20 = 101,721.60/x
  3. Step 3: Cross multiply
    338,414.40x = 507,427.20 × 101,721.60
  4. Step 4: Simplify right side
    338,414.40x = 51,616,306,667.52
  5. Step 5: Solve for x
    x = 51,616,306,667.52/338,414.40
  6. Step 6: Final answer
    x = 152,523.97

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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.