Home / 343,872,318.30-515,808,477.45-221,428,311.90

Finding the Fourth Proportional to 343,872,318.30, 515,808,477.45 and 221,428,311.90

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Solution

The fourth proportional to 343,872,318.30, 515,808,477.45 and 221,428,311.90 is: 332,142,467.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,872,318.30 : 515,808,477.45 = 221,428,311.90 : x
  2. Step 2: Convert to fraction form
    343,872,318.30/515,808,477.45 = 221,428,311.90/x
  3. Step 3: Cross multiply
    343,872,318.30x = 515,808,477.45 × 221,428,311.90
  4. Step 4: Simplify right side
    343,872,318.30x = 114,214,600,425,462,720
  5. Step 5: Solve for x
    x = 114,214,600,425,462,720/343,872,318.30
  6. Step 6: Final answer
    x = 332,142,467.85

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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.