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Finding the Fourth Proportional to 399,340.68, 599,153.64 and 171,540.60

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Solution

The fourth proportional to 399,340.68, 599,153.64 and 171,540.60 is: 257,372.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,340.68 : 599,153.64 = 171,540.60 : x
  2. Step 2: Convert to fraction form
    399,340.68/599,153.64 = 171,540.60/x
  3. Step 3: Cross multiply
    399,340.68x = 599,153.64 × 171,540.60
  4. Step 4: Simplify right side
    399,340.68x = 102,779,174,897.78
  5. Step 5: Solve for x
    x = 102,779,174,897.78/399,340.68
  6. Step 6: Final answer
    x = 257,372.16

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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.