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Finding the Fourth Proportional to 235,870.46, 325,507.08 and 128,446.38

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Solution

The fourth proportional to 235,870.46, 325,507.08 and 128,446.38 is: 177,259.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,870.46 : 325,507.08 = 128,446.38 : x
  2. Step 2: Convert to fraction form
    235,870.46/325,507.08 = 128,446.38/x
  3. Step 3: Cross multiply
    235,870.46x = 325,507.08 × 128,446.38
  4. Step 4: Simplify right side
    235,870.46x = 41,810,206,090.37
  5. Step 5: Solve for x
    x = 41,810,206,090.37/235,870.46
  6. Step 6: Final answer
    x = 177,259.19

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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.