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Finding the Fourth Proportional to 458,955.39, 687,848.94 and 259,387.05

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Solution

The fourth proportional to 458,955.39, 687,848.94 and 259,387.05 is: 388,750.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,955.39 : 687,848.94 = 259,387.05 : x
  2. Step 2: Convert to fraction form
    458,955.39/687,848.94 = 259,387.05/x
  3. Step 3: Cross multiply
    458,955.39x = 687,848.94 × 259,387.05
  4. Step 4: Simplify right side
    458,955.39x = 178,419,107,392.23
  5. Step 5: Solve for x
    x = 178,419,107,392.23/458,955.39
  6. Step 6: Final answer
    x = 388,750.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.