Home / 399,845.40-599,799.10-133,606.86

Finding the Fourth Proportional to 399,845.40, 599,799.10 and 133,606.86

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Solution

The fourth proportional to 399,845.40, 599,799.10 and 133,606.86 is: 200,420.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,845.40 : 599,799.10 = 133,606.86 : x
  2. Step 2: Convert to fraction form
    399,845.40/599,799.10 = 133,606.86/x
  3. Step 3: Cross multiply
    399,845.40x = 599,799.10 × 133,606.86
  4. Step 4: Simplify right side
    399,845.40x = 80,137,274,381.83
  5. Step 5: Solve for x
    x = 80,137,274,381.83/399,845.40
  6. Step 6: Final answer
    x = 200,420.65

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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.