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Finding the Fourth Proportional to 399,810.89, 599,627.88 and 115,439.72

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Solution

The fourth proportional to 399,810.89, 599,627.88 and 115,439.72 is: 173,134.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,810.89 : 599,627.88 = 115,439.72 : x
  2. Step 2: Convert to fraction form
    399,810.89/599,627.88 = 115,439.72/x
  3. Step 3: Cross multiply
    399,810.89x = 599,627.88 × 115,439.72
  4. Step 4: Simplify right side
    399,810.89x = 69,220,871,573.25
  5. Step 5: Solve for x
    x = 69,220,871,573.25/399,810.89
  6. Step 6: Final answer
    x = 173,134.03

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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.