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Finding the Fourth Proportional to 330,860, 495,894.72 and 120,383.36

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Solution

The fourth proportional to 330,860, 495,894.72 and 120,383.36 is: 180,431.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,860 : 495,894.72 = 120,383.36 : x
  2. Step 2: Convert to fraction form
    330,860/495,894.72 = 120,383.36/x
  3. Step 3: Cross multiply
    330,860x = 495,894.72 × 120,383.36
  4. Step 4: Simplify right side
    330,860x = 59,697,472,599.86
  5. Step 5: Solve for x
    x = 59,697,472,599.86/330,860
  6. Step 6: Final answer
    x = 180,431.22

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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.