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Finding the Fourth Proportional to 340,341, 510,515.61 and 103,685.73

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Solution

The fourth proportional to 340,341, 510,515.61 and 103,685.73 is: 155,529.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,341 : 510,515.61 = 103,685.73 : x
  2. Step 2: Convert to fraction form
    340,341/510,515.61 = 103,685.73/x
  3. Step 3: Cross multiply
    340,341x = 510,515.61 × 103,685.73
  4. Step 4: Simplify right side
    340,341x = 52,933,183,699.25
  5. Step 5: Solve for x
    x = 52,933,183,699.25/340,341
  6. Step 6: Final answer
    x = 155,529.85

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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.