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Finding the Fourth Proportional to 428,871.92, 591,846.12 and 237,888.56

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Solution

The fourth proportional to 428,871.92, 591,846.12 and 237,888.56 is: 328,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,871.92 : 591,846.12 = 237,888.56 : x
  2. Step 2: Convert to fraction form
    428,871.92/591,846.12 = 237,888.56/x
  3. Step 3: Cross multiply
    428,871.92x = 591,846.12 × 237,888.56
  4. Step 4: Simplify right side
    428,871.92x = 140,793,421,228.39
  5. Step 5: Solve for x
    x = 140,793,421,228.39/428,871.92
  6. Step 6: Final answer
    x = 328,287.80

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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.