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Finding the Fourth Proportional to 461,458.60, 692,187.90 and 212,626.60

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Solution

The fourth proportional to 461,458.60, 692,187.90 and 212,626.60 is: 318,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,458.60 : 692,187.90 = 212,626.60 : x
  2. Step 2: Convert to fraction form
    461,458.60/692,187.90 = 212,626.60/x
  3. Step 3: Cross multiply
    461,458.60x = 692,187.90 × 212,626.60
  4. Step 4: Simplify right side
    461,458.60x = 147,177,559,738.14
  5. Step 5: Solve for x
    x = 147,177,559,738.14/461,458.60
  6. Step 6: Final answer
    x = 318,939.90

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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.