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Finding the Fourth Proportional to 401,354.94, 553,875.18 and 220,066.41

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Solution

The fourth proportional to 401,354.94, 553,875.18 and 220,066.41 is: 303,694.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,354.94 : 553,875.18 = 220,066.41 : x
  2. Step 2: Convert to fraction form
    401,354.94/553,875.18 = 220,066.41/x
  3. Step 3: Cross multiply
    401,354.94x = 553,875.18 × 220,066.41
  4. Step 4: Simplify right side
    401,354.94x = 121,889,321,900.54
  5. Step 5: Solve for x
    x = 121,889,321,900.54/401,354.94
  6. Step 6: Final answer
    x = 303,694.58

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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.