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Finding the Fourth Proportional to 291,218.39, 436,889.95 and 164,918.33

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Solution

The fourth proportional to 291,218.39, 436,889.95 and 164,918.33 is: 247,412.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,218.39 : 436,889.95 = 164,918.33 : x
  2. Step 2: Convert to fraction form
    291,218.39/436,889.95 = 164,918.33/x
  3. Step 3: Cross multiply
    291,218.39x = 436,889.95 × 164,918.33
  4. Step 4: Simplify right side
    291,218.39x = 72,051,160,947.78
  5. Step 5: Solve for x
    x = 72,051,160,947.78/291,218.39
  6. Step 6: Final answer
    x = 247,412.81

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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.