Home / 331,947.28-458,031.72-315,133.84

Finding the Fourth Proportional to 331,947.28, 458,031.72 and 315,133.84

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Solution

The fourth proportional to 331,947.28, 458,031.72 and 315,133.84 is: 434,831.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,947.28 : 458,031.72 = 315,133.84 : x
  2. Step 2: Convert to fraction form
    331,947.28/458,031.72 = 315,133.84/x
  3. Step 3: Cross multiply
    331,947.28x = 458,031.72 × 315,133.84
  4. Step 4: Simplify right side
    331,947.28x = 144,341,294,765.41
  5. Step 5: Solve for x
    x = 144,341,294,765.41/331,947.28
  6. Step 6: Final answer
    x = 434,831.99

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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.