Home / 256,513.40-384,770.10-130,104.80

Finding the Fourth Proportional to 256,513.40, 384,770.10 and 130,104.80

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Solution

The fourth proportional to 256,513.40, 384,770.10 and 130,104.80 is: 195,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,513.40 : 384,770.10 = 130,104.80 : x
  2. Step 2: Convert to fraction form
    256,513.40/384,770.10 = 130,104.80/x
  3. Step 3: Cross multiply
    256,513.40x = 384,770.10 × 130,104.80
  4. Step 4: Simplify right side
    256,513.40x = 50,060,436,906.48
  5. Step 5: Solve for x
    x = 50,060,436,906.48/256,513.40
  6. Step 6: Final answer
    x = 195,157.20

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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.