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Finding the Fourth Proportional to 345,998.70, 518,994.90 and 109,341.36

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Solution

The fourth proportional to 345,998.70, 518,994.90 and 109,341.36 is: 164,011.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,998.70 : 518,994.90 = 109,341.36 : x
  2. Step 2: Convert to fraction form
    345,998.70/518,994.90 = 109,341.36/x
  3. Step 3: Cross multiply
    345,998.70x = 518,994.90 × 109,341.36
  4. Step 4: Simplify right side
    345,998.70x = 56,747,608,199.06
  5. Step 5: Solve for x
    x = 56,747,608,199.06/345,998.70
  6. Step 6: Final answer
    x = 164,011.04

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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.