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Finding the Fourth Proportional to 340,078.80, 510,096.60 and 115,438.80

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Solution

The fourth proportional to 340,078.80, 510,096.60 and 115,438.80 is: 173,150.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,078.80 : 510,096.60 = 115,438.80 : x
  2. Step 2: Convert to fraction form
    340,078.80/510,096.60 = 115,438.80/x
  3. Step 3: Cross multiply
    340,078.80x = 510,096.60 × 115,438.80
  4. Step 4: Simplify right side
    340,078.80x = 58,884,939,388.08
  5. Step 5: Solve for x
    x = 58,884,939,388.08/340,078.80
  6. Step 6: Final answer
    x = 173,150.87

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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.