Home / 317,821.04-438,596.25-172,629.65

Finding the Fourth Proportional to 317,821.04, 438,596.25 and 172,629.65

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Solution

The fourth proportional to 317,821.04, 438,596.25 and 172,629.65 is: 238,230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,821.04 : 438,596.25 = 172,629.65 : x
  2. Step 2: Convert to fraction form
    317,821.04/438,596.25 = 172,629.65/x
  3. Step 3: Cross multiply
    317,821.04x = 438,596.25 × 172,629.65
  4. Step 4: Simplify right side
    317,821.04x = 75,714,714,935.83
  5. Step 5: Solve for x
    x = 75,714,714,935.83/317,821.04
  6. Step 6: Final answer
    x = 238,230.66

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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.