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Finding the Fourth Proportional to 391,047.75, 585,269.73 and 295,752.87

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Solution

The fourth proportional to 391,047.75, 585,269.73 and 295,752.87 is: 442,644.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,047.75 : 585,269.73 = 295,752.87 : x
  2. Step 2: Convert to fraction form
    391,047.75/585,269.73 = 295,752.87/x
  3. Step 3: Cross multiply
    391,047.75x = 585,269.73 × 295,752.87
  4. Step 4: Simplify right side
    391,047.75x = 173,095,202,371.63
  5. Step 5: Solve for x
    x = 173,095,202,371.63/391,047.75
  6. Step 6: Final answer
    x = 442,644.67

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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.