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Finding the Fourth Proportional to 340,490.75, 510,734.75 and 103,832.75

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Solution

The fourth proportional to 340,490.75, 510,734.75 and 103,832.75 is: 155,748.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,490.75 : 510,734.75 = 103,832.75 : x
  2. Step 2: Convert to fraction form
    340,490.75/510,734.75 = 103,832.75/x
  3. Step 3: Cross multiply
    340,490.75x = 510,734.75 × 103,832.75
  4. Step 4: Simplify right side
    340,490.75x = 53,030,993,613.06
  5. Step 5: Solve for x
    x = 53,030,993,613.06/340,490.75
  6. Step 6: Final answer
    x = 155,748.71

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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.