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Finding the Fourth Proportional to 438,994.60, 658,520.70 and 123,461.80

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Solution

The fourth proportional to 438,994.60, 658,520.70 and 123,461.80 is: 185,200.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,994.60 : 658,520.70 = 123,461.80 : x
  2. Step 2: Convert to fraction form
    438,994.60/658,520.70 = 123,461.80/x
  3. Step 3: Cross multiply
    438,994.60x = 658,520.70 × 123,461.80
  4. Step 4: Simplify right side
    438,994.60x = 81,302,150,959.26
  5. Step 5: Solve for x
    x = 81,302,150,959.26/438,994.60
  6. Step 6: Final answer
    x = 185,200.80

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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.