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Finding the Fourth Proportional to 399,315.22, 599,001.54 and 125,737.90

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Solution

The fourth proportional to 399,315.22, 599,001.54 and 125,737.90 is: 188,615.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,315.22 : 599,001.54 = 125,737.90 : x
  2. Step 2: Convert to fraction form
    399,315.22/599,001.54 = 125,737.90/x
  3. Step 3: Cross multiply
    399,315.22x = 599,001.54 × 125,737.90
  4. Step 4: Simplify right side
    399,315.22x = 75,317,195,736.37
  5. Step 5: Solve for x
    x = 75,317,195,736.37/399,315.22
  6. Step 6: Final answer
    x = 188,615.89

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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.