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Finding the Fourth Proportional to 428,702.20, 591,580.20 and 237,708.52

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Solution

The fourth proportional to 428,702.20, 591,580.20 and 237,708.52 is: 328,021.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,702.20 : 591,580.20 = 237,708.52 : x
  2. Step 2: Convert to fraction form
    428,702.20/591,580.20 = 237,708.52/x
  3. Step 3: Cross multiply
    428,702.20x = 591,580.20 × 237,708.52
  4. Step 4: Simplify right side
    428,702.20x = 140,623,653,803.30
  5. Step 5: Solve for x
    x = 140,623,653,803.30/428,702.20
  6. Step 6: Final answer
    x = 328,021.77

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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.