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Finding the Fourth Proportional to 428,673.06, 591,560.01 and 237,684.78

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Solution

The fourth proportional to 428,673.06, 591,560.01 and 237,684.78 is: 328,000.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,673.06 : 591,560.01 = 237,684.78 : x
  2. Step 2: Convert to fraction form
    428,673.06/591,560.01 = 237,684.78/x
  3. Step 3: Cross multiply
    428,673.06x = 591,560.01 × 237,684.78
  4. Step 4: Simplify right side
    428,673.06x = 140,604,810,833.65
  5. Step 5: Solve for x
    x = 140,604,810,833.65/428,673.06
  6. Step 6: Final answer
    x = 328,000.11

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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.