Home / 245,778.28-339,174.78-138,349.96

Finding the Fourth Proportional to 245,778.28, 339,174.78 and 138,349.96

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Solution

The fourth proportional to 245,778.28, 339,174.78 and 138,349.96 is: 190,923.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,778.28 : 339,174.78 = 138,349.96 : x
  2. Step 2: Convert to fraction form
    245,778.28/339,174.78 = 138,349.96/x
  3. Step 3: Cross multiply
    245,778.28x = 339,174.78 × 138,349.96
  4. Step 4: Simplify right side
    245,778.28x = 46,924,817,246.01
  5. Step 5: Solve for x
    x = 46,924,817,246.01/245,778.28
  6. Step 6: Final answer
    x = 190,923.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.