Home / 290,414,780.80-435,699,153.60-126,582,236.80

Finding the Fourth Proportional to 290,414,780.80, 435,699,153.60 and 126,582,236.80

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Solution

The fourth proportional to 290,414,780.80, 435,699,153.60 and 126,582,236.80 is: 189,906,909.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,414,780.80 : 435,699,153.60 = 126,582,236.80 : x
  2. Step 2: Convert to fraction form
    290,414,780.80/435,699,153.60 = 126,582,236.80/x
  3. Step 3: Cross multiply
    290,414,780.80x = 435,699,153.60 × 126,582,236.80
  4. Step 4: Simplify right side
    290,414,780.80x = 55,151,773,434,554,776
  5. Step 5: Solve for x
    x = 55,151,773,434,554,776/290,414,780.80
  6. Step 6: Final answer
    x = 189,906,909.29

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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.