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Finding the Fourth Proportional to 404,308.51, 558,125.08 and 261,138.38

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Solution

The fourth proportional to 404,308.51, 558,125.08 and 261,138.38 is: 360,486.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,308.51 : 558,125.08 = 261,138.38 : x
  2. Step 2: Convert to fraction form
    404,308.51/558,125.08 = 261,138.38/x
  3. Step 3: Cross multiply
    404,308.51x = 558,125.08 × 261,138.38
  4. Step 4: Simplify right side
    404,308.51x = 145,747,875,785.10
  5. Step 5: Solve for x
    x = 145,747,875,785.10/404,308.51
  6. Step 6: Final answer
    x = 360,486.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.