Home / 354,014.28-488,579.04-218,021.40

Finding the Fourth Proportional to 354,014.28, 488,579.04 and 218,021.40

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Solution

The fourth proportional to 354,014.28, 488,579.04 and 218,021.40 is: 300,893.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,014.28 : 488,579.04 = 218,021.40 : x
  2. Step 2: Convert to fraction form
    354,014.28/488,579.04 = 218,021.40/x
  3. Step 3: Cross multiply
    354,014.28x = 488,579.04 × 218,021.40
  4. Step 4: Simplify right side
    354,014.28x = 106,520,686,311.46
  5. Step 5: Solve for x
    x = 106,520,686,311.46/354,014.28
  6. Step 6: Final answer
    x = 300,893.76

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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.