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Finding the Fourth Proportional to 290,781.60, 435,848.40 and 113,229.60

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Solution

The fourth proportional to 290,781.60, 435,848.40 and 113,229.60 is: 169,718.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,781.60 : 435,848.40 = 113,229.60 : x
  2. Step 2: Convert to fraction form
    290,781.60/435,848.40 = 113,229.60/x
  3. Step 3: Cross multiply
    290,781.60x = 435,848.40 × 113,229.60
  4. Step 4: Simplify right side
    290,781.60x = 49,350,939,992.64
  5. Step 5: Solve for x
    x = 49,350,939,992.64/290,781.60
  6. Step 6: Final answer
    x = 169,718.24

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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.