Home / 345,990.20-519,276.90-156,741.80

Finding the Fourth Proportional to 345,990.20, 519,276.90 and 156,741.80

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Solution

The fourth proportional to 345,990.20, 519,276.90 and 156,741.80 is: 235,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,990.20 : 519,276.90 = 156,741.80 : x
  2. Step 2: Convert to fraction form
    345,990.20/519,276.90 = 156,741.80/x
  3. Step 3: Cross multiply
    345,990.20x = 519,276.90 × 156,741.80
  4. Step 4: Simplify right side
    345,990.20x = 81,392,396,004.42
  5. Step 5: Solve for x
    x = 81,392,396,004.42/345,990.20
  6. Step 6: Final answer
    x = 235,244.80

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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.