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Finding the Fourth Proportional to 554,045.62, 831,068.40 and 133,321.54

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Solution

The fourth proportional to 554,045.62, 831,068.40 and 133,321.54 is: 199,982.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,045.62 : 831,068.40 = 133,321.54 : x
  2. Step 2: Convert to fraction form
    554,045.62/831,068.40 = 133,321.54/x
  3. Step 3: Cross multiply
    554,045.62x = 831,068.40 × 133,321.54
  4. Step 4: Simplify right side
    554,045.62x = 110,799,318,933.34
  5. Step 5: Solve for x
    x = 110,799,318,933.34/554,045.62
  6. Step 6: Final answer
    x = 199,982.30

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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.