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Finding the Fourth Proportional to 554,013.25, 831,019.87 and 133,289.12

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Solution

The fourth proportional to 554,013.25, 831,019.87 and 133,289.12 is: 199,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,013.25 : 831,019.87 = 133,289.12 : x
  2. Step 2: Convert to fraction form
    554,013.25/831,019.87 = 133,289.12/x
  3. Step 3: Cross multiply
    554,013.25x = 831,019.87 × 133,289.12
  4. Step 4: Simplify right side
    554,013.25x = 110,765,907,174.81
  5. Step 5: Solve for x
    x = 110,765,907,174.81/554,013.25
  6. Step 6: Final answer
    x = 199,933.68

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Double scale
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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.