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Finding the Fourth Proportional to 400,668, 552,922.92 and 219,381.36

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Solution

The fourth proportional to 400,668, 552,922.92 and 219,381.36 is: 302,746.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,668 : 552,922.92 = 219,381.36 : x
  2. Step 2: Convert to fraction form
    400,668/552,922.92 = 219,381.36/x
  3. Step 3: Cross multiply
    400,668x = 552,922.92 × 219,381.36
  4. Step 4: Simplify right side
    400,668x = 121,300,982,164.77
  5. Step 5: Solve for x
    x = 121,300,982,164.77/400,668
  6. Step 6: Final answer
    x = 302,746.87

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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.