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Finding the Fourth Proportional to 296,811.60, 445,217.40 and 218,079.60

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Solution

The fourth proportional to 296,811.60, 445,217.40 and 218,079.60 is: 327,119.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,811.60 : 445,217.40 = 218,079.60 : x
  2. Step 2: Convert to fraction form
    296,811.60/445,217.40 = 218,079.60/x
  3. Step 3: Cross multiply
    296,811.60x = 445,217.40 × 218,079.60
  4. Step 4: Simplify right side
    296,811.60x = 97,092,832,505.04
  5. Step 5: Solve for x
    x = 97,092,832,505.04/296,811.60
  6. Step 6: Final answer
    x = 327,119.40

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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.