Home / 420,986.41-631,522.14-136,665.07

Finding the Fourth Proportional to 420,986.41, 631,522.14 and 136,665.07

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Solution

The fourth proportional to 420,986.41, 631,522.14 and 136,665.07 is: 205,011.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,986.41 : 631,522.14 = 136,665.07 : x
  2. Step 2: Convert to fraction form
    420,986.41/631,522.14 = 136,665.07/x
  3. Step 3: Cross multiply
    420,986.41x = 631,522.14 × 136,665.07
  4. Step 4: Simplify right side
    420,986.41x = 86,307,017,469.65
  5. Step 5: Solve for x
    x = 86,307,017,469.65/420,986.41
  6. Step 6: Final answer
    x = 205,011.41

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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.