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Finding the Fourth Proportional to 555,180.40, 831,458.40 and 376,721.20

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Solution

The fourth proportional to 555,180.40, 831,458.40 and 376,721.20 is: 564,191.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,180.40 : 831,458.40 = 376,721.20 : x
  2. Step 2: Convert to fraction form
    555,180.40/831,458.40 = 376,721.20/x
  3. Step 3: Cross multiply
    555,180.40x = 831,458.40 × 376,721.20
  4. Step 4: Simplify right side
    555,180.40x = 313,228,006,198.08
  5. Step 5: Solve for x
    x = 313,228,006,198.08/555,180.40
  6. Step 6: Final answer
    x = 564,191.40

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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.