Home / 391,929.12-587,920.41-155,271.42

Finding the Fourth Proportional to 391,929.12, 587,920.41 and 155,271.42

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Solution

The fourth proportional to 391,929.12, 587,920.41 and 155,271.42 is: 232,917.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,929.12 : 587,920.41 = 155,271.42 : x
  2. Step 2: Convert to fraction form
    391,929.12/587,920.41 = 155,271.42/x
  3. Step 3: Cross multiply
    391,929.12x = 587,920.41 × 155,271.42
  4. Step 4: Simplify right side
    391,929.12x = 91,287,236,907.68
  5. Step 5: Solve for x
    x = 91,287,236,907.68/391,929.12
  6. Step 6: Final answer
    x = 232,917.72

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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.