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Finding the Fourth Proportional to 386,627.22, 579,649.23 and 253,540.98

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Solution

The fourth proportional to 386,627.22, 579,649.23 and 253,540.98 is: 380,120.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,627.22 : 579,649.23 = 253,540.98 : x
  2. Step 2: Convert to fraction form
    386,627.22/579,649.23 = 253,540.98/x
  3. Step 3: Cross multiply
    386,627.22x = 579,649.23 × 253,540.98
  4. Step 4: Simplify right side
    386,627.22x = 146,964,833,830.45
  5. Step 5: Solve for x
    x = 146,964,833,830.45/386,627.22
  6. Step 6: Final answer
    x = 380,120.25

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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.