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Finding the Fourth Proportional to 450,329.41, 621,372.43 and 256,728.88

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Solution

The fourth proportional to 450,329.41, 621,372.43 and 256,728.88 is: 354,239.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,329.41 : 621,372.43 = 256,728.88 : x
  2. Step 2: Convert to fraction form
    450,329.41/621,372.43 = 256,728.88/x
  3. Step 3: Cross multiply
    450,329.41x = 621,372.43 × 256,728.88
  4. Step 4: Simplify right side
    450,329.41x = 159,524,248,016.78
  5. Step 5: Solve for x
    x = 159,524,248,016.78/450,329.41
  6. Step 6: Final answer
    x = 354,239.02

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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.