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Finding the Fourth Proportional to 326,208.55, 489,195.44 and 112,918.51

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Solution

The fourth proportional to 326,208.55, 489,195.44 and 112,918.51 is: 169,337.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,208.55 : 489,195.44 = 112,918.51 : x
  2. Step 2: Convert to fraction form
    326,208.55/489,195.44 = 112,918.51/x
  3. Step 3: Cross multiply
    326,208.55x = 489,195.44 × 112,918.51
  4. Step 4: Simplify right side
    326,208.55x = 55,239,219,619.00
  5. Step 5: Solve for x
    x = 55,239,219,619.00/326,208.55
  6. Step 6: Final answer
    x = 169,337.13

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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.