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Finding the Fourth Proportional to 611,954.32, 917,903.46 and 212,626.34

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Solution

The fourth proportional to 611,954.32, 917,903.46 and 212,626.34 is: 318,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,954.32 : 917,903.46 = 212,626.34 : x
  2. Step 2: Convert to fraction form
    611,954.32/917,903.46 = 212,626.34/x
  3. Step 3: Cross multiply
    611,954.32x = 917,903.46 × 212,626.34
  4. Step 4: Simplify right side
    611,954.32x = 195,170,456,790.29
  5. Step 5: Solve for x
    x = 195,170,456,790.29/611,954.32
  6. Step 6: Final answer
    x = 318,929.78

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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.