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Finding the Fourth Proportional to 341,408.40, 511,893.90 and 141,808.20

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Solution

The fourth proportional to 341,408.40, 511,893.90 and 141,808.20 is: 212,621.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,408.40 : 511,893.90 = 141,808.20 : x
  2. Step 2: Convert to fraction form
    341,408.40/511,893.90 = 141,808.20/x
  3. Step 3: Cross multiply
    341,408.40x = 511,893.90 × 141,808.20
  4. Step 4: Simplify right side
    341,408.40x = 72,590,752,549.98
  5. Step 5: Solve for x
    x = 72,590,752,549.98/341,408.40
  6. Step 6: Final answer
    x = 212,621.46

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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.