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Finding the Fourth Proportional to 290,690.02, 436,035.23 and 80,328.16

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Solution

The fourth proportional to 290,690.02, 436,035.23 and 80,328.16 is: 120,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,690.02 : 436,035.23 = 80,328.16 : x
  2. Step 2: Convert to fraction form
    290,690.02/436,035.23 = 80,328.16/x
  3. Step 3: Cross multiply
    290,690.02x = 436,035.23 × 80,328.16
  4. Step 4: Simplify right side
    290,690.02x = 35,025,907,721.08
  5. Step 5: Solve for x
    x = 35,025,907,721.08/290,690.02
  6. Step 6: Final answer
    x = 120,492.30

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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.