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Finding the Fourth Proportional to 451,345.46, 676,352.91 and 251,390.58

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Solution

The fourth proportional to 451,345.46, 676,352.91 and 251,390.58 is: 376,715.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,345.46 : 676,352.91 = 251,390.58 : x
  2. Step 2: Convert to fraction form
    451,345.46/676,352.91 = 251,390.58/x
  3. Step 3: Cross multiply
    451,345.46x = 676,352.91 × 251,390.58
  4. Step 4: Simplify right side
    451,345.46x = 170,028,750,329.59
  5. Step 5: Solve for x
    x = 170,028,750,329.59/451,345.46
  6. Step 6: Final answer
    x = 376,715.32

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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.