Home / 428,923.31-591,985.13-237,998.21

Finding the Fourth Proportional to 428,923.31, 591,985.13 and 237,998.21

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Solution

The fourth proportional to 428,923.31, 591,985.13 and 237,998.21 is: 328,476.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,923.31 : 591,985.13 = 237,998.21 : x
  2. Step 2: Convert to fraction form
    428,923.31/591,985.13 = 237,998.21/x
  3. Step 3: Cross multiply
    428,923.31x = 591,985.13 × 237,998.21
  4. Step 4: Simplify right side
    428,923.31x = 140,891,397,136.70
  5. Step 5: Solve for x
    x = 140,891,397,136.70/428,923.31
  6. Step 6: Final answer
    x = 328,476.90

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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.