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Finding the Fourth Proportional to 401,871.25, 554,486.87 and 227,443.68

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Solution

The fourth proportional to 401,871.25, 554,486.87 and 227,443.68 is: 313,818.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,871.25 : 554,486.87 = 227,443.68 : x
  2. Step 2: Convert to fraction form
    401,871.25/554,486.87 = 227,443.68/x
  3. Step 3: Cross multiply
    401,871.25x = 554,486.87 × 227,443.68
  4. Step 4: Simplify right side
    401,871.25x = 126,114,534,224.48
  5. Step 5: Solve for x
    x = 126,114,534,224.48/401,871.25
  6. Step 6: Final answer
    x = 313,818.25

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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.