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Finding the Fourth Proportional to 661,796.25, 992,600.64 and 212,457.95

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Solution

The fourth proportional to 661,796.25, 992,600.64 and 212,457.95 is: 318,656.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,796.25 : 992,600.64 = 212,457.95 : x
  2. Step 2: Convert to fraction form
    661,796.25/992,600.64 = 212,457.95/x
  3. Step 3: Cross multiply
    661,796.25x = 992,600.64 × 212,457.95
  4. Step 4: Simplify right side
    661,796.25x = 210,885,892,180.09
  5. Step 5: Solve for x
    x = 210,885,892,180.09/661,796.25
  6. Step 6: Final answer
    x = 318,656.83

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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.