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Finding the Fourth Proportional to 235,618.88, 325,152.23 and 128,188.58

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Solution

The fourth proportional to 235,618.88, 325,152.23 and 128,188.58 is: 176,899.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,618.88 : 325,152.23 = 128,188.58 : x
  2. Step 2: Convert to fraction form
    235,618.88/325,152.23 = 128,188.58/x
  3. Step 3: Cross multiply
    235,618.88x = 325,152.23 × 128,188.58
  4. Step 4: Simplify right side
    235,618.88x = 41,680,800,380.83
  5. Step 5: Solve for x
    x = 41,680,800,380.83/235,618.88
  6. Step 6: Final answer
    x = 176,899.24

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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.