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Finding the Fourth Proportional to 554,137.40, 831,206.10 and 317,285.30

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Solution

The fourth proportional to 554,137.40, 831,206.10 and 317,285.30 is: 475,927.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,137.40 : 831,206.10 = 317,285.30 : x
  2. Step 2: Convert to fraction form
    554,137.40/831,206.10 = 317,285.30/x
  3. Step 3: Cross multiply
    554,137.40x = 831,206.10 × 317,285.30
  4. Step 4: Simplify right side
    554,137.40x = 263,729,476,800.33
  5. Step 5: Solve for x
    x = 263,729,476,800.33/554,137.40
  6. Step 6: Final answer
    x = 475,927.95

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Similar ratio
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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.