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Finding the Fourth Proportional to 340,306.44, 510,420.74 and 91,007.88

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Solution

The fourth proportional to 340,306.44, 510,420.74 and 91,007.88 is: 136,501.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,306.44 : 510,420.74 = 91,007.88 : x
  2. Step 2: Convert to fraction form
    340,306.44/510,420.74 = 91,007.88/x
  3. Step 3: Cross multiply
    340,306.44x = 510,420.74 × 91,007.88
  4. Step 4: Simplify right side
    340,306.44x = 46,452,309,455.43
  5. Step 5: Solve for x
    x = 46,452,309,455.43/340,306.44
  6. Step 6: Final answer
    x = 136,501.41

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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.