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Finding the Fourth Proportional to 555,168.40, 831,440.40 and 376,709.20

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Solution

The fourth proportional to 555,168.40, 831,440.40 and 376,709.20 is: 564,173.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,168.40 : 831,440.40 = 376,709.20 : x
  2. Step 2: Convert to fraction form
    555,168.40/831,440.40 = 376,709.20/x
  3. Step 3: Cross multiply
    555,168.40x = 831,440.40 × 376,709.20
  4. Step 4: Simplify right side
    555,168.40x = 313,211,247,931.68
  5. Step 5: Solve for x
    x = 313,211,247,931.68/555,168.40
  6. Step 6: Final answer
    x = 564,173.41

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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.