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Finding the Fourth Proportional to 450,642.92, 621,955.53 and 257,049.68

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Solution

The fourth proportional to 450,642.92, 621,955.53 and 257,049.68 is: 354,767.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,642.92 : 621,955.53 = 257,049.68 : x
  2. Step 2: Convert to fraction form
    450,642.92/621,955.53 = 257,049.68/x
  3. Step 3: Cross multiply
    450,642.92x = 621,955.53 × 257,049.68
  4. Step 4: Simplify right side
    450,642.92x = 159,873,466,850.95
  5. Step 5: Solve for x
    x = 159,873,466,850.95/450,642.92
  6. Step 6: Final answer
    x = 354,767.51

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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.