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Finding the Fourth Proportional to 260,783.70, 391,175.55 and 134,423.70

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Solution

The fourth proportional to 260,783.70, 391,175.55 and 134,423.70 is: 201,635.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,783.70 : 391,175.55 = 134,423.70 : x
  2. Step 2: Convert to fraction form
    260,783.70/391,175.55 = 134,423.70/x
  3. Step 3: Cross multiply
    260,783.70x = 391,175.55 × 134,423.70
  4. Step 4: Simplify right side
    260,783.70x = 52,583,264,780.54
  5. Step 5: Solve for x
    x = 52,583,264,780.54/260,783.70
  6. Step 6: Final answer
    x = 201,635.55

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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.