Home / 245,705.43-339,017.39-138,236.25

Finding the Fourth Proportional to 245,705.43, 339,017.39 and 138,236.25

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Solution

The fourth proportional to 245,705.43, 339,017.39 and 138,236.25 is: 190,734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,705.43 : 339,017.39 = 138,236.25 : x
  2. Step 2: Convert to fraction form
    245,705.43/339,017.39 = 138,236.25/x
  3. Step 3: Cross multiply
    245,705.43x = 339,017.39 × 138,236.25
  4. Step 4: Simplify right side
    245,705.43x = 46,864,490,292.12
  5. Step 5: Solve for x
    x = 46,864,490,292.12/245,705.43
  6. Step 6: Final answer
    x = 190,734.45

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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.