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Finding the Fourth Proportional to 245,313.39, 338,536.48 and 134,936.40

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Solution

The fourth proportional to 245,313.39, 338,536.48 and 134,936.40 is: 186,214.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,313.39 : 338,536.48 = 134,936.40 : x
  2. Step 2: Convert to fraction form
    245,313.39/338,536.48 = 134,936.40/x
  3. Step 3: Cross multiply
    245,313.39x = 338,536.48 × 134,936.40
  4. Step 4: Simplify right side
    245,313.39x = 45,680,893,542.53
  5. Step 5: Solve for x
    x = 45,680,893,542.53/245,313.39
  6. Step 6: Final answer
    x = 186,214.43

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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.