Home / 289,705.20-434,557.80-171,315.60

Finding the Fourth Proportional to 289,705.20, 434,557.80 and 171,315.60

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Solution

The fourth proportional to 289,705.20, 434,557.80 and 171,315.60 is: 256,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,705.20 : 434,557.80 = 171,315.60 : x
  2. Step 2: Convert to fraction form
    289,705.20/434,557.80 = 171,315.60/x
  3. Step 3: Cross multiply
    289,705.20x = 434,557.80 × 171,315.60
  4. Step 4: Simplify right side
    289,705.20x = 74,446,530,241.68
  5. Step 5: Solve for x
    x = 74,446,530,241.68/289,705.20
  6. Step 6: Final answer
    x = 256,973.40

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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.