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Finding the Fourth Proportional to 428,292.72, 591,048 and 237,308.64

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Solution

The fourth proportional to 428,292.72, 591,048 and 237,308.64 is: 327,488.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,292.72 : 591,048 = 237,308.64 : x
  2. Step 2: Convert to fraction form
    428,292.72/591,048 = 237,308.64/x
  3. Step 3: Cross multiply
    428,292.72x = 591,048 × 237,308.64
  4. Step 4: Simplify right side
    428,292.72x = 140,260,797,054.72
  5. Step 5: Solve for x
    x = 140,260,797,054.72/428,292.72
  6. Step 6: Final answer
    x = 327,488.17

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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.