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Finding the Fourth Proportional to 235,690.61, 325,252.41 and 128,260.61

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Solution

The fourth proportional to 235,690.61, 325,252.41 and 128,260.61 is: 176,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,690.61 : 325,252.41 = 128,260.61 : x
  2. Step 2: Convert to fraction form
    235,690.61/325,252.41 = 128,260.61/x
  3. Step 3: Cross multiply
    235,690.61x = 325,252.41 × 128,260.61
  4. Step 4: Simplify right side
    235,690.61x = 41,717,070,884.31
  5. Step 5: Solve for x
    x = 41,717,070,884.31/235,690.61
  6. Step 6: Final answer
    x = 176,999.29

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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.