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Finding the Fourth Proportional to 212,517, 318,775.62 and 64,773

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Solution

The fourth proportional to 212,517, 318,775.62 and 64,773 is: 97,159.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,517 : 318,775.62 = 64,773 : x
  2. Step 2: Convert to fraction form
    212,517/318,775.62 = 64,773/x
  3. Step 3: Cross multiply
    212,517x = 318,775.62 × 64,773
  4. Step 4: Simplify right side
    212,517x = 20,648,053,234.26
  5. Step 5: Solve for x
    x = 20,648,053,234.26/212,517
  6. Step 6: Final answer
    x = 97,159.54

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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.