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Finding the Fourth Proportional to 554,085.90, 831,129.06 and 133,361.76

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Solution

The fourth proportional to 554,085.90, 831,129.06 and 133,361.76 is: 200,042.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,085.90 : 831,129.06 = 133,361.76 : x
  2. Step 2: Convert to fraction form
    554,085.90/831,129.06 = 133,361.76/x
  3. Step 3: Cross multiply
    554,085.90x = 831,129.06 × 133,361.76
  4. Step 4: Simplify right side
    554,085.90x = 110,840,834,228.75
  5. Step 5: Solve for x
    x = 110,840,834,228.75/554,085.90
  6. Step 6: Final answer
    x = 200,042.69

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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.