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Finding the Fourth Proportional to 340,319.05, 510,359.58 and 100,369.31

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Solution

The fourth proportional to 340,319.05, 510,359.58 and 100,369.31 is: 150,518.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,319.05 : 510,359.58 = 100,369.31 : x
  2. Step 2: Convert to fraction form
    340,319.05/510,359.58 = 100,369.31/x
  3. Step 3: Cross multiply
    340,319.05x = 510,359.58 × 100,369.31
  4. Step 4: Simplify right side
    340,319.05x = 51,224,436,344.69
  5. Step 5: Solve for x
    x = 51,224,436,344.69/340,319.05
  6. Step 6: Final answer
    x = 150,518.86

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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.