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Finding the Fourth Proportional to 235,714.34, 325,279.56 and 128,282.10

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Solution

The fourth proportional to 235,714.34, 325,279.56 and 128,282.10 is: 177,025.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,714.34 : 325,279.56 = 128,282.10 : x
  2. Step 2: Convert to fraction form
    235,714.34/325,279.56 = 128,282.10/x
  3. Step 3: Cross multiply
    235,714.34x = 325,279.56 × 128,282.10
  4. Step 4: Simplify right side
    235,714.34x = 41,727,545,043.88
  5. Step 5: Solve for x
    x = 41,727,545,043.88/235,714.34
  6. Step 6: Final answer
    x = 177,025.91

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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.