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Finding the Fourth Proportional to 554,011.25, 831,016.87 and 133,287.12

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Solution

The fourth proportional to 554,011.25, 831,016.87 and 133,287.12 is: 199,930.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,011.25 : 831,016.87 = 133,287.12 : x
  2. Step 2: Convert to fraction form
    554,011.25/831,016.87 = 133,287.12/x
  3. Step 3: Cross multiply
    554,011.25x = 831,016.87 × 133,287.12
  4. Step 4: Simplify right side
    554,011.25x = 110,763,844,940.50
  5. Step 5: Solve for x
    x = 110,763,844,940.50/554,011.25
  6. Step 6: Final answer
    x = 199,930.68

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Similar ratio
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1.5x scale

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.