Home / 428,420.58-591,085.31-247,108.20

Finding the Fourth Proportional to 428,420.58, 591,085.31 and 247,108.20

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Solution

The fourth proportional to 428,420.58, 591,085.31 and 247,108.20 is: 340,931.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,420.58 : 591,085.31 = 247,108.20 : x
  2. Step 2: Convert to fraction form
    428,420.58/591,085.31 = 247,108.20/x
  3. Step 3: Cross multiply
    428,420.58x = 591,085.31 × 247,108.20
  4. Step 4: Simplify right side
    428,420.58x = 146,062,025,765.00
  5. Step 5: Solve for x
    x = 146,062,025,765.00/428,420.58
  6. Step 6: Final answer
    x = 340,931.39

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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.