Home / 428,905.70-591,960.85-237,980.60

Finding the Fourth Proportional to 428,905.70, 591,960.85 and 237,980.60

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Solution

The fourth proportional to 428,905.70, 591,960.85 and 237,980.60 is: 328,452.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,905.70 : 591,960.85 = 237,980.60 : x
  2. Step 2: Convert to fraction form
    428,905.70/591,960.85 = 237,980.60/x
  3. Step 3: Cross multiply
    428,905.70x = 591,960.85 × 237,980.60
  4. Step 4: Simplify right side
    428,905.70x = 140,875,198,259.51
  5. Step 5: Solve for x
    x = 140,875,198,259.51/428,905.70
  6. Step 6: Final answer
    x = 328,452.61

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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.