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Finding the Fourth Proportional to 391,426.44, 540,159.31 and 230,291.84

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Solution

The fourth proportional to 391,426.44, 540,159.31 and 230,291.84 is: 317,797.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,426.44 : 540,159.31 = 230,291.84 : x
  2. Step 2: Convert to fraction form
    391,426.44/540,159.31 = 230,291.84/x
  3. Step 3: Cross multiply
    391,426.44x = 540,159.31 × 230,291.84
  4. Step 4: Simplify right side
    391,426.44x = 124,394,284,475.89
  5. Step 5: Solve for x
    x = 124,394,284,475.89/391,426.44
  6. Step 6: Final answer
    x = 317,797.35

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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.