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Finding the Fourth Proportional to 290,649.48, 436,142.46 and 122,156.52

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Solution

The fourth proportional to 290,649.48, 436,142.46 and 122,156.52 is: 183,305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,649.48 : 436,142.46 = 122,156.52 : x
  2. Step 2: Convert to fraction form
    290,649.48/436,142.46 = 122,156.52/x
  3. Step 3: Cross multiply
    290,649.48x = 436,142.46 × 122,156.52
  4. Step 4: Simplify right side
    290,649.48x = 53,277,645,137.84
  5. Step 5: Solve for x
    x = 53,277,645,137.84/290,649.48
  6. Step 6: Final answer
    x = 183,305.49

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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.