Home / 321,672,138.15-482,428,491.03-91,643,215.71

Finding the Fourth Proportional to 321,672,138.15, 482,428,491.03 and 91,643,215.71

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Solution

The fourth proportional to 321,672,138.15, 482,428,491.03 and 91,643,215.71 is: 137,442,112.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,672,138.15 : 482,428,491.03 = 91,643,215.71 : x
  2. Step 2: Convert to fraction form
    321,672,138.15/482,428,491.03 = 91,643,215.71/x
  3. Step 3: Cross multiply
    321,672,138.15x = 482,428,491.03 × 91,643,215.71
  4. Step 4: Simplify right side
    321,672,138.15x = 44,211,298,268,112,088
  5. Step 5: Solve for x
    x = 44,211,298,268,112,088/321,672,138.15
  6. Step 6: Final answer
    x = 137,442,112.71

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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.