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Finding the Fourth Proportional to 290,820.48, 436,229.76 and 93,828.48

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Solution

The fourth proportional to 290,820.48, 436,229.76 and 93,828.48 is: 140,742.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,820.48 : 436,229.76 = 93,828.48 : x
  2. Step 2: Convert to fraction form
    290,820.48/436,229.76 = 93,828.48/x
  3. Step 3: Cross multiply
    290,820.48x = 436,229.76 × 93,828.48
  4. Step 4: Simplify right side
    290,820.48x = 40,930,775,311.56
  5. Step 5: Solve for x
    x = 40,930,775,311.56/290,820.48
  6. Step 6: Final answer
    x = 140,742.41

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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.