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Finding the Fourth Proportional to 255,178.88, 382,799.64 and 86,726.96

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Solution

The fourth proportional to 255,178.88, 382,799.64 and 86,726.96 is: 130,101.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,178.88 : 382,799.64 = 86,726.96 : x
  2. Step 2: Convert to fraction form
    255,178.88/382,799.64 = 86,726.96/x
  3. Step 3: Cross multiply
    255,178.88x = 382,799.64 × 86,726.96
  4. Step 4: Simplify right side
    255,178.88x = 33,199,049,066.29
  5. Step 5: Solve for x
    x = 33,199,049,066.29/255,178.88
  6. Step 6: Final answer
    x = 130,101.08

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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.