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Finding the Fourth Proportional to 399,539.40, 599,649.30 and 163,051.80

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Solution

The fourth proportional to 399,539.40, 599,649.30 and 163,051.80 is: 244,716.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,539.40 : 599,649.30 = 163,051.80 : x
  2. Step 2: Convert to fraction form
    399,539.40/599,649.30 = 163,051.80/x
  3. Step 3: Cross multiply
    399,539.40x = 599,649.30 × 163,051.80
  4. Step 4: Simplify right side
    399,539.40x = 97,773,897,733.74
  5. Step 5: Solve for x
    x = 97,773,897,733.74/399,539.40
  6. Step 6: Final answer
    x = 244,716.54

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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.