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Finding the Fourth Proportional to 255,671.52, 352,838.72 and 142,495.08

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Solution

The fourth proportional to 255,671.52, 352,838.72 and 142,495.08 is: 196,649.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,671.52 : 352,838.72 = 142,495.08 : x
  2. Step 2: Convert to fraction form
    255,671.52/352,838.72 = 142,495.08/x
  3. Step 3: Cross multiply
    255,671.52x = 352,838.72 × 142,495.08
  4. Step 4: Simplify right side
    255,671.52x = 50,277,780,921.02
  5. Step 5: Solve for x
    x = 50,277,780,921.02/255,671.52
  6. Step 6: Final answer
    x = 196,649.91

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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.