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Finding the Fourth Proportional to 255,080.45, 382,456.56 and 121,957.76

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Solution

The fourth proportional to 255,080.45, 382,456.56 and 121,957.76 is: 182,858.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,080.45 : 382,456.56 = 121,957.76 : x
  2. Step 2: Convert to fraction form
    255,080.45/382,456.56 = 121,957.76/x
  3. Step 3: Cross multiply
    255,080.45x = 382,456.56 × 121,957.76
  4. Step 4: Simplify right side
    255,080.45x = 46,643,545,354.91
  5. Step 5: Solve for x
    x = 46,643,545,354.91/255,080.45
  6. Step 6: Final answer
    x = 182,858.17

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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.