Home / 212,278.86-318,421.53-54,503.82

Finding the Fourth Proportional to 212,278.86, 318,421.53 and 54,503.82

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Solution

The fourth proportional to 212,278.86, 318,421.53 and 54,503.82 is: 81,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,278.86 : 318,421.53 = 54,503.82 : x
  2. Step 2: Convert to fraction form
    212,278.86/318,421.53 = 54,503.82/x
  3. Step 3: Cross multiply
    212,278.86x = 318,421.53 × 54,503.82
  4. Step 4: Simplify right side
    212,278.86x = 17,355,189,755.24
  5. Step 5: Solve for x
    x = 17,355,189,755.24/212,278.86
  6. Step 6: Final answer
    x = 81,756.56

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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.