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Finding the Fourth Proportional to 256,842.60, 385,004.70 and 116,701.80

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Solution

The fourth proportional to 256,842.60, 385,004.70 and 116,701.80 is: 174,934.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,842.60 : 385,004.70 = 116,701.80 : x
  2. Step 2: Convert to fraction form
    256,842.60/385,004.70 = 116,701.80/x
  3. Step 3: Cross multiply
    256,842.60x = 385,004.70 × 116,701.80
  4. Step 4: Simplify right side
    256,842.60x = 44,930,741,498.46
  5. Step 5: Solve for x
    x = 44,930,741,498.46/256,842.60
  6. Step 6: Final answer
    x = 174,934.93

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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.