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Finding the Fourth Proportional to 451,189.82, 676,708.76 and 211,328.84

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Solution

The fourth proportional to 451,189.82, 676,708.76 and 211,328.84 is: 316,957.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,189.82 : 676,708.76 = 211,328.84 : x
  2. Step 2: Convert to fraction form
    451,189.82/676,708.76 = 211,328.84/x
  3. Step 3: Cross multiply
    451,189.82x = 676,708.76 × 211,328.84
  4. Step 4: Simplify right side
    451,189.82x = 143,008,077,268.64
  5. Step 5: Solve for x
    x = 143,008,077,268.64/451,189.82
  6. Step 6: Final answer
    x = 316,957.68

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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.