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Finding the Fourth Proportional to 297,589.39, 446,387.79 and 87,231.58

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Solution

The fourth proportional to 297,589.39, 446,387.79 and 87,231.58 is: 130,848.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,589.39 : 446,387.79 = 87,231.58 : x
  2. Step 2: Convert to fraction form
    297,589.39/446,387.79 = 87,231.58/x
  3. Step 3: Cross multiply
    297,589.39x = 446,387.79 × 87,231.58
  4. Step 4: Simplify right side
    297,589.39x = 38,939,112,214.41
  5. Step 5: Solve for x
    x = 38,939,112,214.41/297,589.39
  6. Step 6: Final answer
    x = 130,848.46

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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.