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Finding the Fourth Proportional to 421,100.28, 631,410.29 and 250,394.04

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Solution

The fourth proportional to 421,100.28, 631,410.29 and 250,394.04 is: 375,448.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,100.28 : 631,410.29 = 250,394.04 : x
  2. Step 2: Convert to fraction form
    421,100.28/631,410.29 = 250,394.04/x
  3. Step 3: Cross multiply
    421,100.28x = 631,410.29 × 250,394.04
  4. Step 4: Simplify right side
    421,100.28x = 158,101,373,410.67
  5. Step 5: Solve for x
    x = 158,101,373,410.67/421,100.28
  6. Step 6: Final answer
    x = 375,448.27

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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.