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Finding the Fourth Proportional to 260,788.60, 391,182.90 and 201,666.70

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Solution

The fourth proportional to 260,788.60, 391,182.90 and 201,666.70 is: 302,500.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,788.60 : 391,182.90 = 201,666.70 : x
  2. Step 2: Convert to fraction form
    260,788.60/391,182.90 = 201,666.70/x
  3. Step 3: Cross multiply
    260,788.60x = 391,182.90 × 201,666.70
  4. Step 4: Simplify right side
    260,788.60x = 78,888,564,539.43
  5. Step 5: Solve for x
    x = 78,888,564,539.43/260,788.60
  6. Step 6: Final answer
    x = 302,500.05

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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.