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Finding the Fourth Proportional to 260,221.68, 389,708.64 and 133,528.32

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Solution

The fourth proportional to 260,221.68, 389,708.64 and 133,528.32 is: 199,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,221.68 : 389,708.64 = 133,528.32 : x
  2. Step 2: Convert to fraction form
    260,221.68/389,708.64 = 133,528.32/x
  3. Step 3: Cross multiply
    260,221.68x = 389,708.64 × 133,528.32
  4. Step 4: Simplify right side
    260,221.68x = 52,037,139,988.68
  5. Step 5: Solve for x
    x = 52,037,139,988.68/260,221.68
  6. Step 6: Final answer
    x = 199,972.35

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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.