Home / 260,685.05-391,175.36-140,740.40

Finding the Fourth Proportional to 260,685.05, 391,175.36 and 140,740.40

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Solution

The fourth proportional to 260,685.05, 391,175.36 and 140,740.40 is: 211,190.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,685.05 : 391,175.36 = 140,740.40 : x
  2. Step 2: Convert to fraction form
    260,685.05/391,175.36 = 140,740.40/x
  3. Step 3: Cross multiply
    260,685.05x = 391,175.36 × 140,740.40
  4. Step 4: Simplify right side
    260,685.05x = 55,054,176,382.03
  5. Step 5: Solve for x
    x = 55,054,176,382.03/260,685.05
  6. Step 6: Final answer
    x = 211,190.39

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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.