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Finding the Fourth Proportional to 245,148.87, 338,268.60 and 137,698.32

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Solution

The fourth proportional to 245,148.87, 338,268.60 and 137,698.32 is: 190,002.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,148.87 : 338,268.60 = 137,698.32 : x
  2. Step 2: Convert to fraction form
    245,148.87/338,268.60 = 137,698.32/x
  3. Step 3: Cross multiply
    245,148.87x = 338,268.60 × 137,698.32
  4. Step 4: Simplify right side
    245,148.87x = 46,579,017,928.75
  5. Step 5: Solve for x
    x = 46,579,017,928.75/245,148.87
  6. Step 6: Final answer
    x = 190,002.99

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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.