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Finding the Fourth Proportional to 391,311.40, 586,578.30 and 180,581.80

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Solution

The fourth proportional to 391,311.40, 586,578.30 and 180,581.80 is: 270,693.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,311.40 : 586,578.30 = 180,581.80 : x
  2. Step 2: Convert to fraction form
    391,311.40/586,578.30 = 180,581.80/x
  3. Step 3: Cross multiply
    391,311.40x = 586,578.30 × 180,581.80
  4. Step 4: Simplify right side
    391,311.40x = 105,925,365,254.94
  5. Step 5: Solve for x
    x = 105,925,365,254.94/391,311.40
  6. Step 6: Final answer
    x = 270,693.28

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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.