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Finding the Fourth Proportional to 290,756.58, 436,193.46 and 103,763.22

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Solution

The fourth proportional to 290,756.58, 436,193.46 and 103,763.22 is: 155,665.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,756.58 : 436,193.46 = 103,763.22 : x
  2. Step 2: Convert to fraction form
    290,756.58/436,193.46 = 103,763.22/x
  3. Step 3: Cross multiply
    290,756.58x = 436,193.46 × 103,763.22
  4. Step 4: Simplify right side
    290,756.58x = 45,260,837,952.54
  5. Step 5: Solve for x
    x = 45,260,837,952.54/290,756.58
  6. Step 6: Final answer
    x = 155,665.74

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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.