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Finding the Fourth Proportional to 260,065.20, 389,441.70 and 207,577.20

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Solution

The fourth proportional to 260,065.20, 389,441.70 and 207,577.20 is: 310,842.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,065.20 : 389,441.70 = 207,577.20 : x
  2. Step 2: Convert to fraction form
    260,065.20/389,441.70 = 207,577.20/x
  3. Step 3: Cross multiply
    260,065.20x = 389,441.70 × 207,577.20
  4. Step 4: Simplify right side
    260,065.20x = 80,839,217,649.24
  5. Step 5: Solve for x
    x = 80,839,217,649.24/260,065.20
  6. Step 6: Final answer
    x = 310,842.12

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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.