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Finding the Fourth Proportional to 404,515.72, 557,991.18 and 261,360.17

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Solution

The fourth proportional to 404,515.72, 557,991.18 and 261,360.17 is: 360,521.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,515.72 : 557,991.18 = 261,360.17 : x
  2. Step 2: Convert to fraction form
    404,515.72/557,991.18 = 261,360.17/x
  3. Step 3: Cross multiply
    404,515.72x = 557,991.18 × 261,360.17
  4. Step 4: Simplify right side
    404,515.72x = 145,836,668,965.81
  5. Step 5: Solve for x
    x = 145,836,668,965.81/404,515.72
  6. Step 6: Final answer
    x = 360,521.63

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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.