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Finding the Fourth Proportional to 243,378.97, 365,103.05 and 74,913.34

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Solution

The fourth proportional to 243,378.97, 365,103.05 and 74,913.34 is: 112,380.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,378.97 : 365,103.05 = 74,913.34 : x
  2. Step 2: Convert to fraction form
    243,378.97/365,103.05 = 74,913.34/x
  3. Step 3: Cross multiply
    243,378.97x = 365,103.05 × 74,913.34
  4. Step 4: Simplify right side
    243,378.97x = 27,351,088,919.69
  5. Step 5: Solve for x
    x = 27,351,088,919.69/243,378.97
  6. Step 6: Final answer
    x = 112,380.66

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1.5x scale

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.