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Finding the Fourth Proportional to 307,918.40, 461,877.60 and 262,817.60

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Solution

The fourth proportional to 307,918.40, 461,877.60 and 262,817.60 is: 394,226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,918.40 : 461,877.60 = 262,817.60 : x
  2. Step 2: Convert to fraction form
    307,918.40/461,877.60 = 262,817.60/x
  3. Step 3: Cross multiply
    307,918.40x = 461,877.60 × 262,817.60
  4. Step 4: Simplify right side
    307,918.40x = 121,389,562,325.76
  5. Step 5: Solve for x
    x = 121,389,562,325.76/307,918.40
  6. Step 6: Final answer
    x = 394,226.40

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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.