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Finding the Fourth Proportional to 235,857.13, 325,482.61 and 128,427.93

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Solution

The fourth proportional to 235,857.13, 325,482.61 and 128,427.93 is: 177,230.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,857.13 : 325,482.61 = 128,427.93 : x
  2. Step 2: Convert to fraction form
    235,857.13/325,482.61 = 128,427.93/x
  3. Step 3: Cross multiply
    235,857.13x = 325,482.61 × 128,427.93
  4. Step 4: Simplify right side
    235,857.13x = 41,801,057,853.30
  5. Step 5: Solve for x
    x = 41,801,057,853.30/235,857.13
  6. Step 6: Final answer
    x = 177,230.42

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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.