Home / 319,239,900.65-440,550,868.04-172,562,184.65

Finding the Fourth Proportional to 319,239,900.65, 440,550,868.04 and 172,562,184.65

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Solution

The fourth proportional to 319,239,900.65, 440,550,868.04 and 172,562,184.65 is: 238,135,709.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,239,900.65 : 440,550,868.04 = 172,562,184.65 : x
  2. Step 2: Convert to fraction form
    319,239,900.65/440,550,868.04 = 172,562,184.65/x
  3. Step 3: Cross multiply
    319,239,900.65x = 440,550,868.04 × 172,562,184.65
  4. Step 4: Simplify right side
    319,239,900.65x = 76,022,420,239,321,936
  5. Step 5: Solve for x
    x = 76,022,420,239,321,936/319,239,900.65
  6. Step 6: Final answer
    x = 238,135,709.49

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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.