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Finding the Fourth Proportional to 230,571.63, 318,188.07 and 128,597.22

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Solution

The fourth proportional to 230,571.63, 318,188.07 and 128,597.22 is: 177,463.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,571.63 : 318,188.07 = 128,597.22 : x
  2. Step 2: Convert to fraction form
    230,571.63/318,188.07 = 128,597.22/x
  3. Step 3: Cross multiply
    230,571.63x = 318,188.07 × 128,597.22
  4. Step 4: Simplify right side
    230,571.63x = 40,918,101,239.17
  5. Step 5: Solve for x
    x = 40,918,101,239.17/230,571.63
  6. Step 6: Final answer
    x = 177,463.73

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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.