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Finding the Fourth Proportional to 501,211.18, 691,642.56 and 274,856.68

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Solution

The fourth proportional to 501,211.18, 691,642.56 and 274,856.68 is: 379,286.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,211.18 : 691,642.56 = 274,856.68 : x
  2. Step 2: Convert to fraction form
    501,211.18/691,642.56 = 274,856.68/x
  3. Step 3: Cross multiply
    501,211.18x = 691,642.56 × 274,856.68
  4. Step 4: Simplify right side
    501,211.18x = 190,102,577,788.30
  5. Step 5: Solve for x
    x = 190,102,577,788.30/501,211.18
  6. Step 6: Final answer
    x = 379,286.39

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1.5x scale

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.