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Finding the Fourth Proportional to 256,958.80, 385,380.60 and 168,830.80

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Solution

The fourth proportional to 256,958.80, 385,380.60 and 168,830.80 is: 253,208.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,958.80 : 385,380.60 = 168,830.80 : x
  2. Step 2: Convert to fraction form
    256,958.80/385,380.60 = 168,830.80/x
  3. Step 3: Cross multiply
    256,958.80x = 385,380.60 × 168,830.80
  4. Step 4: Simplify right side
    256,958.80x = 65,064,115,002.48
  5. Step 5: Solve for x
    x = 65,064,115,002.48/256,958.80
  6. Step 6: Final answer
    x = 253,208.35

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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.