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Finding the Fourth Proportional to 554,684.40, 831,879.54 and 255,011.88

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Solution

The fourth proportional to 554,684.40, 831,879.54 and 255,011.88 is: 382,450.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,684.40 : 831,879.54 = 255,011.88 : x
  2. Step 2: Convert to fraction form
    554,684.40/831,879.54 = 255,011.88/x
  3. Step 3: Cross multiply
    554,684.40x = 831,879.54 × 255,011.88
  4. Step 4: Simplify right side
    554,684.40x = 212,139,165,428.94
  5. Step 5: Solve for x
    x = 212,139,165,428.94/554,684.40
  6. Step 6: Final answer
    x = 382,450.21

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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.