Home / 256,645,994.70-385,063,470.45-84,128,436.30

Finding the Fourth Proportional to 256,645,994.70, 385,063,470.45 and 84,128,436.30

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Solution

The fourth proportional to 256,645,994.70, 385,063,470.45 and 84,128,436.30 is: 126,223,624.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,645,994.70 : 385,063,470.45 = 84,128,436.30 : x
  2. Step 2: Convert to fraction form
    256,645,994.70/385,063,470.45 = 84,128,436.30/x
  3. Step 3: Cross multiply
    256,645,994.70x = 385,063,470.45 × 84,128,436.30
  4. Step 4: Simplify right side
    256,645,994.70x = 32,394,787,645,209,756
  5. Step 5: Solve for x
    x = 32,394,787,645,209,756/256,645,994.70
  6. Step 6: Final answer
    x = 126,223,624.43

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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.