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Finding the Fourth Proportional to 401,668.90, 554,298.21 and 220,382.32

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Solution

The fourth proportional to 401,668.90, 554,298.21 and 220,382.32 is: 304,124.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,668.90 : 554,298.21 = 220,382.32 : x
  2. Step 2: Convert to fraction form
    401,668.90/554,298.21 = 220,382.32/x
  3. Step 3: Cross multiply
    401,668.90x = 554,298.21 × 220,382.32
  4. Step 4: Simplify right side
    401,668.90x = 122,157,525,491.65
  5. Step 5: Solve for x
    x = 122,157,525,491.65/401,668.90
  6. Step 6: Final answer
    x = 304,124.93

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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.