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Finding the Fourth Proportional to 326,804.12, 490,625.98 and 251,971.80

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Solution

The fourth proportional to 326,804.12, 490,625.98 and 251,971.80 is: 378,281.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,804.12 : 490,625.98 = 251,971.80 : x
  2. Step 2: Convert to fraction form
    326,804.12/490,625.98 = 251,971.80/x
  3. Step 3: Cross multiply
    326,804.12x = 490,625.98 × 251,971.80
  4. Step 4: Simplify right side
    326,804.12x = 123,623,911,307.36
  5. Step 5: Solve for x
    x = 123,623,911,307.36/326,804.12
  6. Step 6: Final answer
    x = 378,281.37

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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.