Home / 212,231.27-318,347.10-52,307.21

Finding the Fourth Proportional to 212,231.27, 318,347.10 and 52,307.21

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Solution

The fourth proportional to 212,231.27, 318,347.10 and 52,307.21 is: 78,460.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,231.27 : 318,347.10 = 52,307.21 : x
  2. Step 2: Convert to fraction form
    212,231.27/318,347.10 = 52,307.21/x
  3. Step 3: Cross multiply
    212,231.27x = 318,347.10 × 52,307.21
  4. Step 4: Simplify right side
    212,231.27x = 16,651,847,020.86
  5. Step 5: Solve for x
    x = 16,651,847,020.86/212,231.27
  6. Step 6: Final answer
    x = 78,460.86

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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.