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Finding the Fourth Proportional to 553,908.03, 831,002.02 and 154,548.56

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Solution

The fourth proportional to 553,908.03, 831,002.02 and 154,548.56 is: 231,861.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,908.03 : 831,002.02 = 154,548.56 : x
  2. Step 2: Convert to fraction form
    553,908.03/831,002.02 = 154,548.56/x
  3. Step 3: Cross multiply
    553,908.03x = 831,002.02 × 154,548.56
  4. Step 4: Simplify right side
    553,908.03x = 128,430,167,239.23
  5. Step 5: Solve for x
    x = 128,430,167,239.23/553,908.03
  6. Step 6: Final answer
    x = 231,861.90

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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.