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Finding the Fourth Proportional to 269,764.40, 404,646.60 and 258,246.20

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Solution

The fourth proportional to 269,764.40, 404,646.60 and 258,246.20 is: 387,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,764.40 : 404,646.60 = 258,246.20 : x
  2. Step 2: Convert to fraction form
    269,764.40/404,646.60 = 258,246.20/x
  3. Step 3: Cross multiply
    269,764.40x = 404,646.60 × 258,246.20
  4. Step 4: Simplify right side
    269,764.40x = 104,498,446,792.92
  5. Step 5: Solve for x
    x = 104,498,446,792.92/269,764.40
  6. Step 6: Final answer
    x = 387,369.30

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1.5x scale

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.