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Finding the Fourth Proportional to 212,434.31, 318,541.65 and 62,655.48

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Solution

The fourth proportional to 212,434.31, 318,541.65 and 62,655.48 is: 93,950.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,434.31 : 318,541.65 = 62,655.48 : x
  2. Step 2: Convert to fraction form
    212,434.31/318,541.65 = 62,655.48/x
  3. Step 3: Cross multiply
    212,434.31x = 318,541.65 × 62,655.48
  4. Step 4: Simplify right side
    212,434.31x = 19,958,380,777.10
  5. Step 5: Solve for x
    x = 19,958,380,777.10/212,434.31
  6. Step 6: Final answer
    x = 93,950.84

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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.