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Finding the Fourth Proportional to 212,655.96, 318,973.34 and 79,526.43

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Solution

The fourth proportional to 212,655.96, 318,973.34 and 79,526.43 is: 119,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,655.96 : 318,973.34 = 79,526.43 : x
  2. Step 2: Convert to fraction form
    212,655.96/318,973.34 = 79,526.43/x
  3. Step 3: Cross multiply
    212,655.96x = 318,973.34 × 79,526.43
  4. Step 4: Simplify right side
    212,655.96x = 25,366,810,995.38
  5. Step 5: Solve for x
    x = 25,366,810,995.38/212,655.96
  6. Step 6: Final answer
    x = 119,285.68

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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.