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Finding the Fourth Proportional to 817,991.55, 1,227,004.34 and 218,952

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Solution

The fourth proportional to 817,991.55, 1,227,004.34 and 218,952 is: 328,432.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,991.55 : 1,227,004.34 = 218,952 : x
  2. Step 2: Convert to fraction form
    817,991.55/1,227,004.34 = 218,952/x
  3. Step 3: Cross multiply
    817,991.55x = 1,227,004.34 × 218,952
  4. Step 4: Simplify right side
    817,991.55x = 268,655,053,156.92
  5. Step 5: Solve for x
    x = 268,655,053,156.92/817,991.55
  6. Step 6: Final answer
    x = 328,432.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.