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Finding the Fourth Proportional to 400,668.81, 552,923.09 and 219,392.20

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Solution

The fourth proportional to 400,668.81, 552,923.09 and 219,392.20 is: 302,761.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,668.81 : 552,923.09 = 219,392.20 : x
  2. Step 2: Convert to fraction form
    400,668.81/552,923.09 = 219,392.20/x
  3. Step 3: Cross multiply
    400,668.81x = 552,923.09 × 219,392.20
  4. Step 4: Simplify right side
    400,668.81x = 121,307,013,145.90
  5. Step 5: Solve for x
    x = 121,307,013,145.90/400,668.81
  6. Step 6: Final answer
    x = 302,761.31

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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.