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Finding the Fourth Proportional to 445,828.68, 615,286.80 and 254,805.66

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Solution

The fourth proportional to 445,828.68, 615,286.80 and 254,805.66 is: 351,656.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,828.68 : 615,286.80 = 254,805.66 : x
  2. Step 2: Convert to fraction form
    445,828.68/615,286.80 = 254,805.66/x
  3. Step 3: Cross multiply
    445,828.68x = 615,286.80 × 254,805.66
  4. Step 4: Simplify right side
    445,828.68x = 156,778,559,163.29
  5. Step 5: Solve for x
    x = 156,778,559,163.29/445,828.68
  6. Step 6: Final answer
    x = 351,656.51

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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.