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Finding the Fourth Proportional to 290,346.35, 435,420.20 and 110,388.38

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Solution

The fourth proportional to 290,346.35, 435,420.20 and 110,388.38 is: 165,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,346.35 : 435,420.20 = 110,388.38 : x
  2. Step 2: Convert to fraction form
    290,346.35/435,420.20 = 110,388.38/x
  3. Step 3: Cross multiply
    290,346.35x = 435,420.20 × 110,388.38
  4. Step 4: Simplify right side
    290,346.35x = 48,065,327,768.23
  5. Step 5: Solve for x
    x = 48,065,327,768.23/290,346.35
  6. Step 6: Final answer
    x = 165,544.80

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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.