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Finding the Fourth Proportional to 245,784.44, 339,114.60 and 138,348.20

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Solution

The fourth proportional to 245,784.44, 339,114.60 and 138,348.20 is: 190,882.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,784.44 : 339,114.60 = 138,348.20 : x
  2. Step 2: Convert to fraction form
    245,784.44/339,114.60 = 138,348.20/x
  3. Step 3: Cross multiply
    245,784.44x = 339,114.60 × 138,348.20
  4. Step 4: Simplify right side
    245,784.44x = 46,915,894,503.72
  5. Step 5: Solve for x
    x = 46,915,894,503.72/245,784.44
  6. Step 6: Final answer
    x = 190,882.28

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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.