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Finding the Fourth Proportional to 331,894.40, 497,744.40 and 154,358.60

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Solution

The fourth proportional to 331,894.40, 497,744.40 and 154,358.60 is: 231,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,894.40 : 497,744.40 = 154,358.60 : x
  2. Step 2: Convert to fraction form
    331,894.40/497,744.40 = 154,358.60/x
  3. Step 3: Cross multiply
    331,894.40x = 497,744.40 × 154,358.60
  4. Step 4: Simplify right side
    331,894.40x = 76,831,128,741.84
  5. Step 5: Solve for x
    x = 76,831,128,741.84/331,894.40
  6. Step 6: Final answer
    x = 231,492.69

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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.