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Finding the Fourth Proportional to 428,755.35, 591,718.73 and 237,830.25

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Solution

The fourth proportional to 428,755.35, 591,718.73 and 237,830.25 is: 328,225.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,755.35 : 591,718.73 = 237,830.25 : x
  2. Step 2: Convert to fraction form
    428,755.35/591,718.73 = 237,830.25/x
  3. Step 3: Cross multiply
    428,755.35x = 591,718.73 × 237,830.25
  4. Step 4: Simplify right side
    428,755.35x = 140,728,612,296.43
  5. Step 5: Solve for x
    x = 140,728,612,296.43/428,755.35
  6. Step 6: Final answer
    x = 328,225.90

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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.