Home / 428,765.40-591,657.48-237,778.20

Finding the Fourth Proportional to 428,765.40, 591,657.48 and 237,778.20

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Solution

The fourth proportional to 428,765.40, 591,657.48 and 237,778.20 is: 328,112.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,765.40 : 591,657.48 = 237,778.20 : x
  2. Step 2: Convert to fraction form
    428,765.40/591,657.48 = 237,778.20/x
  3. Step 3: Cross multiply
    428,765.40x = 591,657.48 × 237,778.20
  4. Step 4: Simplify right side
    428,765.40x = 140,683,250,610.94
  5. Step 5: Solve for x
    x = 140,683,250,610.94/428,765.40
  6. Step 6: Final answer
    x = 328,112.41

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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.