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Finding the Fourth Proportional to 255,606.28, 352,735.06 and 139,319.64

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Solution

The fourth proportional to 255,606.28, 352,735.06 and 139,319.64 is: 192,260.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,606.28 : 352,735.06 = 139,319.64 : x
  2. Step 2: Convert to fraction form
    255,606.28/352,735.06 = 139,319.64/x
  3. Step 3: Cross multiply
    255,606.28x = 352,735.06 × 139,319.64
  4. Step 4: Simplify right side
    255,606.28x = 49,142,921,574.58
  5. Step 5: Solve for x
    x = 49,142,921,574.58/255,606.28
  6. Step 6: Final answer
    x = 192,260.23

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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.