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Finding the Fourth Proportional to 245,369.76, 338,623.60 and 136,485.60

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Solution

The fourth proportional to 245,369.76, 338,623.60 and 136,485.60 is: 188,357.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,369.76 : 338,623.60 = 136,485.60 : x
  2. Step 2: Convert to fraction form
    245,369.76/338,623.60 = 136,485.60/x
  3. Step 3: Cross multiply
    245,369.76x = 338,623.60 × 136,485.60
  4. Step 4: Simplify right side
    245,369.76x = 46,217,245,220.16
  5. Step 5: Solve for x
    x = 46,217,245,220.16/245,369.76
  6. Step 6: Final answer
    x = 188,357.54

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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.