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Finding the Fourth Proportional to 307,905.40, 461,858.10 and 201,617.20

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Solution

The fourth proportional to 307,905.40, 461,858.10 and 201,617.20 is: 302,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,905.40 : 461,858.10 = 201,617.20 : x
  2. Step 2: Convert to fraction form
    307,905.40/461,858.10 = 201,617.20/x
  3. Step 3: Cross multiply
    307,905.40x = 461,858.10 × 201,617.20
  4. Step 4: Simplify right side
    307,905.40x = 93,118,536,919.32
  5. Step 5: Solve for x
    x = 93,118,536,919.32/307,905.40
  6. Step 6: Final answer
    x = 302,425.80

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Similar ratio
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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.