Home / 289,936.20-434,558.70-121,456.20

Finding the Fourth Proportional to 289,936.20, 434,558.70 and 121,456.20

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Solution

The fourth proportional to 289,936.20, 434,558.70 and 121,456.20 is: 182,039.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,936.20 : 434,558.70 = 121,456.20 : x
  2. Step 2: Convert to fraction form
    289,936.20/434,558.70 = 121,456.20/x
  3. Step 3: Cross multiply
    289,936.20x = 434,558.70 × 121,456.20
  4. Step 4: Simplify right side
    289,936.20x = 52,779,848,378.94
  5. Step 5: Solve for x
    x = 52,779,848,378.94/289,936.20
  6. Step 6: Final answer
    x = 182,039.53

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1.5x scale

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.