Home / 421,356.06-631,984.86-168,626.34

Finding the Fourth Proportional to 421,356.06, 631,984.86 and 168,626.34

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Solution

The fourth proportional to 421,356.06, 631,984.86 and 168,626.34 is: 252,919.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,356.06 : 631,984.86 = 168,626.34 : x
  2. Step 2: Convert to fraction form
    421,356.06/631,984.86 = 168,626.34/x
  3. Step 3: Cross multiply
    421,356.06x = 631,984.86 × 168,626.34
  4. Step 4: Simplify right side
    421,356.06x = 106,569,293,877.21
  5. Step 5: Solve for x
    x = 106,569,293,877.21/421,356.06
  6. Step 6: Final answer
    x = 252,919.81

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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.