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Finding the Fourth Proportional to 553,913.58, 831,010.32 and 154,554.09

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Solution

The fourth proportional to 553,913.58, 831,010.32 and 154,554.09 is: 231,870.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,913.58 : 831,010.32 = 154,554.09 : x
  2. Step 2: Convert to fraction form
    553,913.58/831,010.32 = 154,554.09/x
  3. Step 3: Cross multiply
    553,913.58x = 831,010.32 × 154,554.09
  4. Step 4: Simplify right side
    553,913.58x = 128,436,043,788.21
  5. Step 5: Solve for x
    x = 128,436,043,788.21/553,913.58
  6. Step 6: Final answer
    x = 231,870.18

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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.