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Finding the Fourth Proportional to 428,872.42, 591,846.81 and 237,889.06

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Solution

The fourth proportional to 428,872.42, 591,846.81 and 237,889.06 is: 328,288.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,872.42 : 591,846.81 = 237,889.06 : x
  2. Step 2: Convert to fraction form
    428,872.42/591,846.81 = 237,889.06/x
  3. Step 3: Cross multiply
    428,872.42x = 591,846.81 × 237,889.06
  4. Step 4: Simplify right side
    428,872.42x = 140,793,881,294.90
  5. Step 5: Solve for x
    x = 140,793,881,294.90/428,872.42
  6. Step 6: Final answer
    x = 328,288.49

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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.