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Finding the Fourth Proportional to 401,265.73, 553,655.73 and 272,221.80

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Solution

The fourth proportional to 401,265.73, 553,655.73 and 272,221.80 is: 375,604.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,265.73 : 553,655.73 = 272,221.80 : x
  2. Step 2: Convert to fraction form
    401,265.73/553,655.73 = 272,221.80/x
  3. Step 3: Cross multiply
    401,265.73x = 553,655.73 × 272,221.80
  4. Step 4: Simplify right side
    401,265.73x = 150,717,159,400.91
  5. Step 5: Solve for x
    x = 150,717,159,400.91/401,265.73
  6. Step 6: Final answer
    x = 375,604.36

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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.