Home / 289,780.20-434,670.30-100,240.20

Finding the Fourth Proportional to 289,780.20, 434,670.30 and 100,240.20

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Solution

The fourth proportional to 289,780.20, 434,670.30 and 100,240.20 is: 150,360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,780.20 : 434,670.30 = 100,240.20 : x
  2. Step 2: Convert to fraction form
    289,780.20/434,670.30 = 100,240.20/x
  3. Step 3: Cross multiply
    289,780.20x = 434,670.30 × 100,240.20
  4. Step 4: Simplify right side
    289,780.20x = 43,571,437,806.06
  5. Step 5: Solve for x
    x = 43,571,437,806.06/289,780.20
  6. Step 6: Final answer
    x = 150,360.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.