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Finding the Fourth Proportional to 418,312.44, 627,510.11 and 133,931.43

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Solution

The fourth proportional to 418,312.44, 627,510.11 and 133,931.43 is: 200,910.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,312.44 : 627,510.11 = 133,931.43 : x
  2. Step 2: Convert to fraction form
    418,312.44/627,510.11 = 133,931.43/x
  3. Step 3: Cross multiply
    418,312.44x = 627,510.11 × 133,931.43
  4. Step 4: Simplify right side
    418,312.44x = 84,043,325,702.10
  5. Step 5: Solve for x
    x = 84,043,325,702.10/418,312.44
  6. Step 6: Final answer
    x = 200,910.41

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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.