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Finding the Fourth Proportional to 399,166.20, 599,186.70 and 249,575.40

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Solution

The fourth proportional to 399,166.20, 599,186.70 and 249,575.40 is: 374,636.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,166.20 : 599,186.70 = 249,575.40 : x
  2. Step 2: Convert to fraction form
    399,166.20/599,186.70 = 249,575.40/x
  3. Step 3: Cross multiply
    399,166.20x = 599,186.70 × 249,575.40
  4. Step 4: Simplify right side
    399,166.20x = 149,542,260,327.18
  5. Step 5: Solve for x
    x = 149,542,260,327.18/399,166.20
  6. Step 6: Final answer
    x = 374,636.58

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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.