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Finding the Fourth Proportional to 255,129.45, 352,127.40 and 168,936.42

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Solution

The fourth proportional to 255,129.45, 352,127.40 and 168,936.42 is: 233,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,129.45 : 352,127.40 = 168,936.42 : x
  2. Step 2: Convert to fraction form
    255,129.45/352,127.40 = 168,936.42/x
  3. Step 3: Cross multiply
    255,129.45x = 352,127.40 × 168,936.42
  4. Step 4: Simplify right side
    255,129.45x = 59,487,142,339.91
  5. Step 5: Solve for x
    x = 59,487,142,339.91/255,129.45
  6. Step 6: Final answer
    x = 233,164.55

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1.5x scale

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.