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Finding the Fourth Proportional to 476,645.76, 657,770.76 and 261,791.64

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Solution

The fourth proportional to 476,645.76, 657,770.76 and 261,791.64 is: 361,272.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,645.76 : 657,770.76 = 261,791.64 : x
  2. Step 2: Convert to fraction form
    476,645.76/657,770.76 = 261,791.64/x
  3. Step 3: Cross multiply
    476,645.76x = 657,770.76 × 261,791.64
  4. Step 4: Simplify right side
    476,645.76x = 172,198,886,004.45
  5. Step 5: Solve for x
    x = 172,198,886,004.45/476,645.76
  6. Step 6: Final answer
    x = 361,272.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.