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Finding the Fourth Proportional to 260,000.60, 389,223.30 and 154,765.40

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Solution

The fourth proportional to 260,000.60, 389,223.30 and 154,765.40 is: 231,685.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,000.60 : 389,223.30 = 154,765.40 : x
  2. Step 2: Convert to fraction form
    260,000.60/389,223.30 = 154,765.40/x
  3. Step 3: Cross multiply
    260,000.60x = 389,223.30 × 154,765.40
  4. Step 4: Simplify right side
    260,000.60x = 60,238,299,713.82
  5. Step 5: Solve for x
    x = 60,238,299,713.82/260,000.60
  6. Step 6: Final answer
    x = 231,685.23

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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.