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Finding the Fourth Proportional to 401,685.38, 602,128.94 and 201,394.45

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Solution

The fourth proportional to 401,685.38, 602,128.94 and 201,394.45 is: 301,891.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,685.38 : 602,128.94 = 201,394.45 : x
  2. Step 2: Convert to fraction form
    401,685.38/602,128.94 = 201,394.45/x
  3. Step 3: Cross multiply
    401,685.38x = 602,128.94 × 201,394.45
  4. Step 4: Simplify right side
    401,685.38x = 121,265,427,578.92
  5. Step 5: Solve for x
    x = 121,265,427,578.92/401,685.38
  6. Step 6: Final answer
    x = 301,891.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.