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Finding the Fourth Proportional to 391,196.40, 586,575.90 and 180,573.72

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Solution

The fourth proportional to 391,196.40, 586,575.90 and 180,573.72 is: 270,759.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,196.40 : 586,575.90 = 180,573.72 : x
  2. Step 2: Convert to fraction form
    391,196.40/586,575.90 = 180,573.72/x
  3. Step 3: Cross multiply
    391,196.40x = 586,575.90 × 180,573.72
  4. Step 4: Simplify right side
    391,196.40x = 105,920,192,325.35
  5. Step 5: Solve for x
    x = 105,920,192,325.35/391,196.40
  6. Step 6: Final answer
    x = 270,759.63

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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.