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Finding the Fourth Proportional to 290,157.63, 435,096.36 and 121,632.69

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Solution

The fourth proportional to 290,157.63, 435,096.36 and 121,632.69 is: 182,390.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,157.63 : 435,096.36 = 121,632.69 : x
  2. Step 2: Convert to fraction form
    290,157.63/435,096.36 = 121,632.69/x
  3. Step 3: Cross multiply
    290,157.63x = 435,096.36 × 121,632.69
  4. Step 4: Simplify right side
    290,157.63x = 52,921,940,676.01
  5. Step 5: Solve for x
    x = 52,921,940,676.01/290,157.63
  6. Step 6: Final answer
    x = 182,390.31

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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.