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Finding the Fourth Proportional to 361,994.60, 542,989.20 and 109,274.60

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Solution

The fourth proportional to 361,994.60, 542,989.20 and 109,274.60 is: 163,911.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,994.60 : 542,989.20 = 109,274.60 : x
  2. Step 2: Convert to fraction form
    361,994.60/542,989.20 = 109,274.60/x
  3. Step 3: Cross multiply
    361,994.60x = 542,989.20 × 109,274.60
  4. Step 4: Simplify right side
    361,994.60x = 59,334,927,634.32
  5. Step 5: Solve for x
    x = 59,334,927,634.32/361,994.60
  6. Step 6: Final answer
    x = 163,911.08

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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.