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Finding the Fourth Proportional to 256,922.60, 385,124.70 and 116,781.80

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Solution

The fourth proportional to 256,922.60, 385,124.70 and 116,781.80 is: 175,054.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,922.60 : 385,124.70 = 116,781.80 : x
  2. Step 2: Convert to fraction form
    256,922.60/385,124.70 = 116,781.80/x
  3. Step 3: Cross multiply
    256,922.60x = 385,124.70 × 116,781.80
  4. Step 4: Simplify right side
    256,922.60x = 44,975,555,690.46
  5. Step 5: Solve for x
    x = 44,975,555,690.46/256,922.60
  6. Step 6: Final answer
    x = 175,054.88

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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.