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Finding the Fourth Proportional to 402,448.91, 603,701.30 and 136,119.39

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Solution

The fourth proportional to 402,448.91, 603,701.30 and 136,119.39 is: 204,188.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,448.91 : 603,701.30 = 136,119.39 : x
  2. Step 2: Convert to fraction form
    402,448.91/603,701.30 = 136,119.39/x
  3. Step 3: Cross multiply
    402,448.91x = 603,701.30 × 136,119.39
  4. Step 4: Simplify right side
    402,448.91x = 82,175,450,774.63
  5. Step 5: Solve for x
    x = 82,175,450,774.63/402,448.91
  6. Step 6: Final answer
    x = 204,188.53

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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.