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Finding the Fourth Proportional to 260,012.70, 389,824.65 and 110,130.30

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Solution

The fourth proportional to 260,012.70, 389,824.65 and 110,130.30 is: 165,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,012.70 : 389,824.65 = 110,130.30 : x
  2. Step 2: Convert to fraction form
    260,012.70/389,824.65 = 110,130.30/x
  3. Step 3: Cross multiply
    260,012.70x = 389,824.65 × 110,130.30
  4. Step 4: Simplify right side
    260,012.70x = 42,931,505,651.90
  5. Step 5: Solve for x
    x = 42,931,505,651.90/260,012.70
  6. Step 6: Final answer
    x = 165,113.11

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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.