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Finding the Fourth Proportional to 255,664.44, 352,828.98 and 142,488

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Solution

The fourth proportional to 255,664.44, 352,828.98 and 142,488 is: 196,640.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,664.44 : 352,828.98 = 142,488 : x
  2. Step 2: Convert to fraction form
    255,664.44/352,828.98 = 142,488/x
  3. Step 3: Cross multiply
    255,664.44x = 352,828.98 × 142,488
  4. Step 4: Simplify right side
    255,664.44x = 50,273,895,702.24
  5. Step 5: Solve for x
    x = 50,273,895,702.24/255,664.44
  6. Step 6: Final answer
    x = 196,640.16

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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.