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Finding the Fourth Proportional to 305,897.40, 458,910.90 and 92,647.80

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Solution

The fourth proportional to 305,897.40, 458,910.90 and 92,647.80 is: 138,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,897.40 : 458,910.90 = 92,647.80 : x
  2. Step 2: Convert to fraction form
    305,897.40/458,910.90 = 92,647.80/x
  3. Step 3: Cross multiply
    305,897.40x = 458,910.90 × 92,647.80
  4. Step 4: Simplify right side
    305,897.40x = 42,517,085,281.02
  5. Step 5: Solve for x
    x = 42,517,085,281.02/305,897.40
  6. Step 6: Final answer
    x = 138,991.33

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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.