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Finding the Fourth Proportional to 428,950.06, 591,951.78 and 237,963.45

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Solution

The fourth proportional to 428,950.06, 591,951.78 and 237,963.45 is: 328,389.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,950.06 : 591,951.78 = 237,963.45 : x
  2. Step 2: Convert to fraction form
    428,950.06/591,951.78 = 237,963.45/x
  3. Step 3: Cross multiply
    428,950.06x = 591,951.78 × 237,963.45
  4. Step 4: Simplify right side
    428,950.06x = 140,862,887,802.44
  5. Step 5: Solve for x
    x = 140,862,887,802.44/428,950.06
  6. Step 6: Final answer
    x = 328,389.95

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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.