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Finding the Fourth Proportional to 401,489.49, 554,071.03 and 220,209.06

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Solution

The fourth proportional to 401,489.49, 554,071.03 and 220,209.06 is: 303,897.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,489.49 : 554,071.03 = 220,209.06 : x
  2. Step 2: Convert to fraction form
    401,489.49/554,071.03 = 220,209.06/x
  3. Step 3: Cross multiply
    401,489.49x = 554,071.03 × 220,209.06
  4. Step 4: Simplify right side
    401,489.49x = 122,011,459,588.49
  5. Step 5: Solve for x
    x = 122,011,459,588.49/401,489.49
  6. Step 6: Final answer
    x = 303,897.02

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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.