Home / 213,479,852.40-320,219,778.60-126,181,810.80

Finding the Fourth Proportional to 213,479,852.40, 320,219,778.60 and 126,181,810.80

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Solution

The fourth proportional to 213,479,852.40, 320,219,778.60 and 126,181,810.80 is: 189,272,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,479,852.40 : 320,219,778.60 = 126,181,810.80 : x
  2. Step 2: Convert to fraction form
    213,479,852.40/320,219,778.60 = 126,181,810.80/x
  3. Step 3: Cross multiply
    213,479,852.40x = 320,219,778.60 × 126,181,810.80
  4. Step 4: Simplify right side
    213,479,852.40x = 40,405,911,517,723,088
  5. Step 5: Solve for x
    x = 40,405,911,517,723,088/213,479,852.40
  6. Step 6: Final answer
    x = 189,272,716.20

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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.