Home / 424,205.24-636,172.62-139,842.79

Finding the Fourth Proportional to 424,205.24, 636,172.62 and 139,842.79

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Solution

The fourth proportional to 424,205.24, 636,172.62 and 139,842.79 is: 209,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,205.24 : 636,172.62 = 139,842.79 : x
  2. Step 2: Convert to fraction form
    424,205.24/636,172.62 = 139,842.79/x
  3. Step 3: Cross multiply
    424,205.24x = 636,172.62 × 139,842.79
  4. Step 4: Simplify right side
    424,205.24x = 88,964,151,987.57
  5. Step 5: Solve for x
    x = 88,964,151,987.57/424,205.24
  6. Step 6: Final answer
    x = 209,719.60

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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.