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Finding the Fourth Proportional to 255,423.70, 352,512.39 and 140,714.09

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Solution

The fourth proportional to 255,423.70, 352,512.39 and 140,714.09 is: 194,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,423.70 : 352,512.39 = 140,714.09 : x
  2. Step 2: Convert to fraction form
    255,423.70/352,512.39 = 140,714.09/x
  3. Step 3: Cross multiply
    255,423.70x = 352,512.39 × 140,714.09
  4. Step 4: Simplify right side
    255,423.70x = 49,603,460,410.58
  5. Step 5: Solve for x
    x = 49,603,460,410.58/255,423.70
  6. Step 6: Final answer
    x = 194,200.70

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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.