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Finding the Fourth Proportional to 235,918, 325,561.98 and 128,489.92

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Solution

The fourth proportional to 235,918, 325,561.98 and 128,489.92 is: 177,313.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,918 : 325,561.98 = 128,489.92 : x
  2. Step 2: Convert to fraction form
    235,918/325,561.98 = 128,489.92/x
  3. Step 3: Cross multiply
    235,918x = 325,561.98 × 128,489.92
  4. Step 4: Simplify right side
    235,918x = 41,831,432,765.24
  5. Step 5: Solve for x
    x = 41,831,432,765.24/235,918
  6. Step 6: Final answer
    x = 177,313.44

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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.