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Finding the Fourth Proportional to 476,480.45, 657,538.47 and 261,618.63

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Solution

The fourth proportional to 476,480.45, 657,538.47 and 261,618.63 is: 361,031.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,480.45 : 657,538.47 = 261,618.63 : x
  2. Step 2: Convert to fraction form
    476,480.45/657,538.47 = 261,618.63/x
  3. Step 3: Cross multiply
    476,480.45x = 657,538.47 × 261,618.63
  4. Step 4: Simplify right side
    476,480.45x = 172,024,313,693.70
  5. Step 5: Solve for x
    x = 172,024,313,693.70/476,480.45
  6. Step 6: Final answer
    x = 361,031.21

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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.