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Finding the Fourth Proportional to 547,706.40, 821,435.40 and 247,989.12

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Solution

The fourth proportional to 547,706.40, 821,435.40 and 247,989.12 is: 371,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,706.40 : 821,435.40 = 247,989.12 : x
  2. Step 2: Convert to fraction form
    547,706.40/821,435.40 = 247,989.12/x
  3. Step 3: Cross multiply
    547,706.40x = 821,435.40 × 247,989.12
  4. Step 4: Simplify right side
    547,706.40x = 203,707,041,982.85
  5. Step 5: Solve for x
    x = 203,707,041,982.85/547,706.40
  6. Step 6: Final answer
    x = 371,927.45

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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.