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Finding the Fourth Proportional to 404,309.51, 558,126.46 and 261,139.38

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Solution

The fourth proportional to 404,309.51, 558,126.46 and 261,139.38 is: 360,488.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,309.51 : 558,126.46 = 261,139.38 : x
  2. Step 2: Convert to fraction form
    404,309.51/558,126.46 = 261,139.38/x
  3. Step 3: Cross multiply
    404,309.51x = 558,126.46 × 261,139.38
  4. Step 4: Simplify right side
    404,309.51x = 145,748,797,726.00
  5. Step 5: Solve for x
    x = 145,748,797,726.00/404,309.51
  6. Step 6: Final answer
    x = 360,488.18

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1.5x scale

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.