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Finding the Fourth Proportional to 326,555.11, 489,890.07 and 149,080.06

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Solution

The fourth proportional to 326,555.11, 489,890.07 and 149,080.06 is: 223,646.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,555.11 : 489,890.07 = 149,080.06 : x
  2. Step 2: Convert to fraction form
    326,555.11/489,890.07 = 149,080.06/x
  3. Step 3: Cross multiply
    326,555.11x = 489,890.07 × 149,080.06
  4. Step 4: Simplify right side
    326,555.11x = 73,032,841,029.00
  5. Step 5: Solve for x
    x = 73,032,841,029.00/326,555.11
  6. Step 6: Final answer
    x = 223,646.30

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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.