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Finding the Fourth Proportional to 445,842, 668,801.88 and 113,418

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Solution

The fourth proportional to 445,842, 668,801.88 and 113,418 is: 170,136.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,842 : 668,801.88 = 113,418 : x
  2. Step 2: Convert to fraction form
    445,842/668,801.88 = 113,418/x
  3. Step 3: Cross multiply
    445,842x = 668,801.88 × 113,418
  4. Step 4: Simplify right side
    445,842x = 75,854,171,625.84
  5. Step 5: Solve for x
    x = 75,854,171,625.84/445,842
  6. Step 6: Final answer
    x = 170,136.89

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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.