Home / 280,453,256.73-420,659,955.95-86,344,431.48

Finding the Fourth Proportional to 280,453,256.73, 420,659,955.95 and 86,344,431.48

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Solution

The fourth proportional to 280,453,256.73, 420,659,955.95 and 86,344,431.48 is: 129,510,511.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,453,256.73 : 420,659,955.95 = 86,344,431.48 : x
  2. Step 2: Convert to fraction form
    280,453,256.73/420,659,955.95 = 86,344,431.48/x
  3. Step 3: Cross multiply
    280,453,256.73x = 420,659,955.95 × 86,344,431.48
  4. Step 4: Simplify right side
    280,453,256.73x = 36,321,644,742,472,872
  5. Step 5: Solve for x
    x = 36,321,644,742,472,872/280,453,256.73
  6. Step 6: Final answer
    x = 129,510,511.54

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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.