Home / 428,825.40-591,740.28-237,838.20

Finding the Fourth Proportional to 428,825.40, 591,740.28 and 237,838.20

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Solution

The fourth proportional to 428,825.40, 591,740.28 and 237,838.20 is: 328,195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,825.40 : 591,740.28 = 237,838.20 : x
  2. Step 2: Convert to fraction form
    428,825.40/591,740.28 = 237,838.20/x
  3. Step 3: Cross multiply
    428,825.40x = 591,740.28 × 237,838.20
  4. Step 4: Simplify right side
    428,825.40x = 140,738,443,062.70
  5. Step 5: Solve for x
    x = 140,738,443,062.70/428,825.40
  6. Step 6: Final answer
    x = 328,195.21

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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.