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Finding the Fourth Proportional to 401,699.46, 554,326.70 and 220,406.88

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Solution

The fourth proportional to 401,699.46, 554,326.70 and 220,406.88 is: 304,151.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,699.46 : 554,326.70 = 220,406.88 : x
  2. Step 2: Convert to fraction form
    401,699.46/554,326.70 = 220,406.88/x
  3. Step 3: Cross multiply
    401,699.46x = 554,326.70 × 220,406.88
  4. Step 4: Simplify right side
    401,699.46x = 122,177,416,506.73
  5. Step 5: Solve for x
    x = 122,177,416,506.73/401,699.46
  6. Step 6: Final answer
    x = 304,151.31

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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.