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Finding the Fourth Proportional to 307,719.40, 461,708.70 and 167,578.60

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Solution

The fourth proportional to 307,719.40, 461,708.70 and 167,578.60 is: 251,438.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,719.40 : 461,708.70 = 167,578.60 : x
  2. Step 2: Convert to fraction form
    307,719.40/461,708.70 = 167,578.60/x
  3. Step 3: Cross multiply
    307,719.40x = 461,708.70 × 167,578.60
  4. Step 4: Simplify right side
    307,719.40x = 77,372,497,553.82
  5. Step 5: Solve for x
    x = 77,372,497,553.82/307,719.40
  6. Step 6: Final answer
    x = 251,438.48

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1.5x scale

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.