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Finding the Fourth Proportional to 671,894.40, 1,008,230.40 and 251,212.80

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Solution

The fourth proportional to 671,894.40, 1,008,230.40 and 251,212.80 is: 376,964.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,894.40 : 1,008,230.40 = 251,212.80 : x
  2. Step 2: Convert to fraction form
    671,894.40/1,008,230.40 = 251,212.80/x
  3. Step 3: Cross multiply
    671,894.40x = 1,008,230.40 × 251,212.80
  4. Step 4: Simplify right side
    671,894.40x = 253,280,381,829.12
  5. Step 5: Solve for x
    x = 253,280,381,829.12/671,894.40
  6. Step 6: Final answer
    x = 376,964.57

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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.