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Finding the Fourth Proportional to 260,159.43, 389,928.53 and 133,860.18

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Solution

The fourth proportional to 260,159.43, 389,928.53 and 133,860.18 is: 200,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,159.43 : 389,928.53 = 133,860.18 : x
  2. Step 2: Convert to fraction form
    260,159.43/389,928.53 = 133,860.18/x
  3. Step 3: Cross multiply
    260,159.43x = 389,928.53 × 133,860.18
  4. Step 4: Simplify right side
    260,159.43x = 52,195,903,547.59
  5. Step 5: Solve for x
    x = 52,195,903,547.59/260,159.43
  6. Step 6: Final answer
    x = 200,630.45

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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.