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Finding the Fourth Proportional to 291,374.03, 436,239.32 and 154,286.49

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Solution

The fourth proportional to 291,374.03, 436,239.32 and 154,286.49 is: 230,994.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,374.03 : 436,239.32 = 154,286.49 : x
  2. Step 2: Convert to fraction form
    291,374.03/436,239.32 = 154,286.49/x
  3. Step 3: Cross multiply
    291,374.03x = 436,239.32 × 154,286.49
  4. Step 4: Simplify right side
    291,374.03x = 67,305,833,482.79
  5. Step 5: Solve for x
    x = 67,305,833,482.79/291,374.03
  6. Step 6: Final answer
    x = 230,994.62

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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.