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Finding the Fourth Proportional to 401,966.16, 554,719.80 and 220,694.80

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Solution

The fourth proportional to 401,966.16, 554,719.80 and 220,694.80 is: 304,562.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,966.16 : 554,719.80 = 220,694.80 : x
  2. Step 2: Convert to fraction form
    401,966.16/554,719.80 = 220,694.80/x
  3. Step 3: Cross multiply
    401,966.16x = 554,719.80 × 220,694.80
  4. Step 4: Simplify right side
    401,966.16x = 122,423,775,317.04
  5. Step 5: Solve for x
    x = 122,423,775,317.04/401,966.16
  6. Step 6: Final answer
    x = 304,562.39

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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.