Home / 214,264,990.32-321,438,853.80-91,441,515.12

Finding the Fourth Proportional to 214,264,990.32, 321,438,853.80 and 91,441,515.12

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Solution

The fourth proportional to 214,264,990.32, 321,438,853.80 and 91,441,515.12 is: 137,179,927.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,264,990.32 : 321,438,853.80 = 91,441,515.12 : x
  2. Step 2: Convert to fraction form
    214,264,990.32/321,438,853.80 = 91,441,515.12/x
  3. Step 3: Cross multiply
    214,264,990.32x = 321,438,853.80 × 91,441,515.12
  4. Step 4: Simplify right side
    214,264,990.32x = 29,392,855,809,908,172
  5. Step 5: Solve for x
    x = 29,392,855,809,908,172/214,264,990.32
  6. Step 6: Final answer
    x = 137,179,927.37

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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.