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Finding the Fourth Proportional to 235,520.91, 325,015.68 and 128,088.63

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Solution

The fourth proportional to 235,520.91, 325,015.68 and 128,088.63 is: 176,760.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,520.91 : 325,015.68 = 128,088.63 : x
  2. Step 2: Convert to fraction form
    235,520.91/325,015.68 = 128,088.63/x
  3. Step 3: Cross multiply
    235,520.91x = 325,015.68 × 128,088.63
  4. Step 4: Simplify right side
    235,520.91x = 41,630,813,179.72
  5. Step 5: Solve for x
    x = 41,630,813,179.72/235,520.91
  6. Step 6: Final answer
    x = 176,760.58

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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.