Home / 290,414,783.80-435,699,158.10-126,582,239.80

Finding the Fourth Proportional to 290,414,783.80, 435,699,158.10 and 126,582,239.80

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Solution

The fourth proportional to 290,414,783.80, 435,699,158.10 and 126,582,239.80 is: 189,906,913.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,414,783.80 : 435,699,158.10 = 126,582,239.80 : x
  2. Step 2: Convert to fraction form
    290,414,783.80/435,699,158.10 = 126,582,239.80/x
  3. Step 3: Cross multiply
    290,414,783.80x = 435,699,158.10 × 126,582,239.80
  4. Step 4: Simplify right side
    290,414,783.80x = 55,151,775,311,272,312
  5. Step 5: Solve for x
    x = 55,151,775,311,272,312/290,414,783.80
  6. Step 6: Final answer
    x = 189,906,913.79

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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.