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Finding the Fourth Proportional to 291,648.40, 437,472.60 and 266,716.60

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Solution

The fourth proportional to 291,648.40, 437,472.60 and 266,716.60 is: 400,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,648.40 : 437,472.60 = 266,716.60 : x
  2. Step 2: Convert to fraction form
    291,648.40/437,472.60 = 266,716.60/x
  3. Step 3: Cross multiply
    291,648.40x = 437,472.60 × 266,716.60
  4. Step 4: Simplify right side
    291,648.40x = 116,681,204,465.16
  5. Step 5: Solve for x
    x = 116,681,204,465.16/291,648.40
  6. Step 6: Final answer
    x = 400,074.90

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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.