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Finding the Fourth Proportional to 290,009.70, 435,173.11 and 112,523.72

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Solution

The fourth proportional to 290,009.70, 435,173.11 and 112,523.72 is: 168,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,009.70 : 435,173.11 = 112,523.72 : x
  2. Step 2: Convert to fraction form
    290,009.70/435,173.11 = 112,523.72/x
  3. Step 3: Cross multiply
    290,009.70x = 435,173.11 × 112,523.72
  4. Step 4: Simplify right side
    290,009.70x = 48,967,297,181.17
  5. Step 5: Solve for x
    x = 48,967,297,181.17/290,009.70
  6. Step 6: Final answer
    x = 168,847.10

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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.