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Finding the Fourth Proportional to 212,402.88, 318,647.70 and 62,630.64

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Solution

The fourth proportional to 212,402.88, 318,647.70 and 62,630.64 is: 93,958.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,402.88 : 318,647.70 = 62,630.64 : x
  2. Step 2: Convert to fraction form
    212,402.88/318,647.70 = 62,630.64/x
  3. Step 3: Cross multiply
    212,402.88x = 318,647.70 × 62,630.64
  4. Step 4: Simplify right side
    212,402.88x = 19,957,109,385.53
  5. Step 5: Solve for x
    x = 19,957,109,385.53/212,402.88
  6. Step 6: Final answer
    x = 93,958.75

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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.