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Finding the Fourth Proportional to 255,008.95, 351,733.25 and 220,956.95

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Solution

The fourth proportional to 255,008.95, 351,733.25 and 220,956.95 is: 304,765.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,008.95 : 351,733.25 = 220,956.95 : x
  2. Step 2: Convert to fraction form
    255,008.95/351,733.25 = 220,956.95/x
  3. Step 3: Cross multiply
    255,008.95x = 351,733.25 × 220,956.95
  4. Step 4: Simplify right side
    255,008.95x = 77,717,906,133.59
  5. Step 5: Solve for x
    x = 77,717,906,133.59/255,008.95
  6. Step 6: Final answer
    x = 304,765.41

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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.