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Finding the Fourth Proportional to 245,353.03, 338,570.41 and 137,939.74

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Solution

The fourth proportional to 245,353.03, 338,570.41 and 137,939.74 is: 190,347.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,353.03 : 338,570.41 = 137,939.74 : x
  2. Step 2: Convert to fraction form
    245,353.03/338,570.41 = 137,939.74/x
  3. Step 3: Cross multiply
    245,353.03x = 338,570.41 × 137,939.74
  4. Step 4: Simplify right side
    245,353.03x = 46,702,314,327.09
  5. Step 5: Solve for x
    x = 46,702,314,327.09/245,353.03
  6. Step 6: Final answer
    x = 190,347.41

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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.