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Finding the Fourth Proportional to 395,099.15, 545,202.41 and 231,788.57

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Solution

The fourth proportional to 395,099.15, 545,202.41 and 231,788.57 is: 319,848.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,099.15 : 545,202.41 = 231,788.57 : x
  2. Step 2: Convert to fraction form
    395,099.15/545,202.41 = 231,788.57/x
  3. Step 3: Cross multiply
    395,099.15x = 545,202.41 × 231,788.57
  4. Step 4: Simplify right side
    395,099.15x = 126,371,683,089.50
  5. Step 5: Solve for x
    x = 126,371,683,089.50/395,099.15
  6. Step 6: Final answer
    x = 319,848.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.