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Finding the Fourth Proportional to 260,690.58, 359,915.49 and 200,140.65

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Solution

The fourth proportional to 260,690.58, 359,915.49 and 200,140.65 is: 276,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,690.58 : 359,915.49 = 200,140.65 : x
  2. Step 2: Convert to fraction form
    260,690.58/359,915.49 = 200,140.65/x
  3. Step 3: Cross multiply
    260,690.58x = 359,915.49 × 200,140.65
  4. Step 4: Simplify right side
    260,690.58x = 72,033,720,113.67
  5. Step 5: Solve for x
    x = 72,033,720,113.67/260,690.58
  6. Step 6: Final answer
    x = 276,318.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.