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Finding the Fourth Proportional to 661,347.44, 992,171.16 and 212,099.60

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Solution

The fourth proportional to 661,347.44, 992,171.16 and 212,099.60 is: 318,197.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,347.44 : 992,171.16 = 212,099.60 : x
  2. Step 2: Convert to fraction form
    661,347.44/992,171.16 = 212,099.60/x
  3. Step 3: Cross multiply
    661,347.44x = 992,171.16 × 212,099.60
  4. Step 4: Simplify right side
    661,347.44x = 210,439,106,167.54
  5. Step 5: Solve for x
    x = 210,439,106,167.54/661,347.44
  6. Step 6: Final answer
    x = 318,197.51

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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.