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Finding the Fourth Proportional to 450,067.98, 621,104.63 and 256,471.55

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Solution

The fourth proportional to 450,067.98, 621,104.63 and 256,471.55 is: 353,936.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,067.98 : 621,104.63 = 256,471.55 : x
  2. Step 2: Convert to fraction form
    450,067.98/621,104.63 = 256,471.55/x
  3. Step 3: Cross multiply
    450,067.98x = 621,104.63 × 256,471.55
  4. Step 4: Simplify right side
    450,067.98x = 159,295,662,780.40
  5. Step 5: Solve for x
    x = 159,295,662,780.40/450,067.98
  6. Step 6: Final answer
    x = 353,936.89

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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.