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Finding the Fourth Proportional to 326,659, 490,114.44 and 127,120.08

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Solution

The fourth proportional to 326,659, 490,114.44 and 127,120.08 is: 190,729.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,659 : 490,114.44 = 127,120.08 : x
  2. Step 2: Convert to fraction form
    326,659/490,114.44 = 127,120.08/x
  3. Step 3: Cross multiply
    326,659x = 490,114.44 × 127,120.08
  4. Step 4: Simplify right side
    326,659x = 62,303,386,821.96
  5. Step 5: Solve for x
    x = 62,303,386,821.96/326,659
  6. Step 6: Final answer
    x = 190,729.13

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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.