Home / 380,617.34-570,747.20-220,738.70

Finding the Fourth Proportional to 380,617.34, 570,747.20 and 220,738.70

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Solution

The fourth proportional to 380,617.34, 570,747.20 and 220,738.70 is: 331,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,617.34 : 570,747.20 = 220,738.70 : x
  2. Step 2: Convert to fraction form
    380,617.34/570,747.20 = 220,738.70/x
  3. Step 3: Cross multiply
    380,617.34x = 570,747.20 × 220,738.70
  4. Step 4: Simplify right side
    380,617.34x = 125,985,994,956.64
  5. Step 5: Solve for x
    x = 125,985,994,956.64/380,617.34
  6. Step 6: Final answer
    x = 331,004.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.