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Finding the Fourth Proportional to 345,911.60, 519,086.10 and 203,756.60

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Solution

The fourth proportional to 345,911.60, 519,086.10 and 203,756.60 is: 305,763.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,911.60 : 519,086.10 = 203,756.60 : x
  2. Step 2: Convert to fraction form
    345,911.60/519,086.10 = 203,756.60/x
  3. Step 3: Cross multiply
    345,911.60x = 519,086.10 × 203,756.60
  4. Step 4: Simplify right side
    345,911.60x = 105,767,218,843.26
  5. Step 5: Solve for x
    x = 105,767,218,843.26/345,911.60
  6. Step 6: Final answer
    x = 305,763.72

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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.