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Finding the Fourth Proportional to 401,453.80, 601,655.10 and 201,999.40

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Solution

The fourth proportional to 401,453.80, 601,655.10 and 201,999.40 is: 302,734.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,453.80 : 601,655.10 = 201,999.40 : x
  2. Step 2: Convert to fraction form
    401,453.80/601,655.10 = 201,999.40/x
  3. Step 3: Cross multiply
    401,453.80x = 601,655.10 × 201,999.40
  4. Step 4: Simplify right side
    401,453.80x = 121,533,969,206.94
  5. Step 5: Solve for x
    x = 121,533,969,206.94/401,453.80
  6. Step 6: Final answer
    x = 302,734.63

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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.