Home / 257,416.56-386,119.26-70,428.06

Finding the Fourth Proportional to 257,416.56, 386,119.26 and 70,428.06

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Solution

The fourth proportional to 257,416.56, 386,119.26 and 70,428.06 is: 105,640.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,416.56 : 386,119.26 = 70,428.06 : x
  2. Step 2: Convert to fraction form
    257,416.56/386,119.26 = 70,428.06/x
  3. Step 3: Cross multiply
    257,416.56x = 386,119.26 × 70,428.06
  4. Step 4: Simplify right side
    257,416.56x = 27,193,630,410.44
  5. Step 5: Solve for x
    x = 27,193,630,410.44/257,416.56
  6. Step 6: Final answer
    x = 105,640.56

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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.