Home / 440,178,346.20-660,347,235.45-221,277,798.30

Finding the Fourth Proportional to 440,178,346.20, 660,347,235.45 and 221,277,798.30

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Solution

The fourth proportional to 440,178,346.20, 660,347,235.45 and 221,277,798.30 is: 331,956,770.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,178,346.20 : 660,347,235.45 = 221,277,798.30 : x
  2. Step 2: Convert to fraction form
    440,178,346.20/660,347,235.45 = 221,277,798.30/x
  3. Step 3: Cross multiply
    440,178,346.20x = 660,347,235.45 × 221,277,798.30
  4. Step 4: Simplify right side
    440,178,346.20x = 146,120,182,373,867,744
  5. Step 5: Solve for x
    x = 146,120,182,373,867,744/440,178,346.20
  6. Step 6: Final answer
    x = 331,956,770.78

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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.