Home / 428,230.73-590,983.16-234,638.80

Finding the Fourth Proportional to 428,230.73, 590,983.16 and 234,638.80

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Solution

The fourth proportional to 428,230.73, 590,983.16 and 234,638.80 is: 323,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,230.73 : 590,983.16 = 234,638.80 : x
  2. Step 2: Convert to fraction form
    428,230.73/590,983.16 = 234,638.80/x
  3. Step 3: Cross multiply
    428,230.73x = 590,983.16 × 234,638.80
  4. Step 4: Simplify right side
    428,230.73x = 138,667,576,831.96
  5. Step 5: Solve for x
    x = 138,667,576,831.96/428,230.73
  6. Step 6: Final answer
    x = 323,815.10

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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.