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Finding the Fourth Proportional to 245,369.40, 338,600.76 and 137,949.36

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Solution

The fourth proportional to 245,369.40, 338,600.76 and 137,949.36 is: 190,365.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,369.40 : 338,600.76 = 137,949.36 : x
  2. Step 2: Convert to fraction form
    245,369.40/338,600.76 = 137,949.36/x
  3. Step 3: Cross multiply
    245,369.40x = 338,600.76 × 137,949.36
  4. Step 4: Simplify right side
    245,369.40x = 46,709,758,137.51
  5. Step 5: Solve for x
    x = 46,709,758,137.51/245,369.40
  6. Step 6: Final answer
    x = 190,365.05

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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.