Home / 257,623.60-386,435.40-70,634.80

Finding the Fourth Proportional to 257,623.60, 386,435.40 and 70,634.80

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Solution

The fourth proportional to 257,623.60, 386,435.40 and 70,634.80 is: 105,952.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,623.60 : 386,435.40 = 70,634.80 : x
  2. Step 2: Convert to fraction form
    257,623.60/386,435.40 = 70,634.80/x
  3. Step 3: Cross multiply
    257,623.60x = 386,435.40 × 70,634.80
  4. Step 4: Simplify right side
    257,623.60x = 27,295,787,191.92
  5. Step 5: Solve for x
    x = 27,295,787,191.92/257,623.60
  6. Step 6: Final answer
    x = 105,952.20

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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.